Please Wait... While Loading Full Video

Tricks Of Some Important Chemical Compounds For NDA

Cleansing Agents

Q 2839178912

Consider the following statements.
I. Soap cannot be used in acidic water.
II. Ionic part of a soap is `- COO^-* Na^+`
III. Soap dissolves in water faster then detergent.
Which of the statements given above is/are correct?

(A)

I and II

(B)

II and Ill

(C)

only III

(D)

Only II

Solution:

Correct Answer is `=>` (A) I and II
Q 2878380206

Which of the following enzymes hydrolysis triglycerides to fatty acids and glycerol?

(A)

Amylase

(B)

Maltase

(C)

Lipase

(D)

pepsin

Solution:

Correct Answer is `=>` (C) Lipase
Q 2818180009

Which of the following is not a fatty acids'?

(A)

Stearic acid

(B)

Palmitic acid

(C)

Oleic acid

(D)

Phenyl acetic acid

Solution:

Correct Answer is `=>` (D) Phenyl acetic acid
Q 2848280103

Washing soap can be prepared by saponification with alkali of which of the following oil'?

(A)

Olive oil

(B)

Paraffin oil

(C)

Groundnut oil

(D)

Kerosene oil

Solution:

Correct Answer is `=>` (A) Olive oil
Q 1805267168

Glycerol is added to soap. It functions ............
NCERT Exemplar
(A)

as a filler

(B)

to increases leathering

(C)

to prevent rapid drying

(D)

to make soap granules

Solution:

Glycerol is added to shaving soap to prevent rapid drying while to enhance the
leathering property of soap, a gum called rosin is added to them. It forms sodium
rosinate which lathers well. Soap granules are dried miniature soap bubbles.
Builders/fillers make the soap act more rapidly. Builder or filler (e.g. sodium
tripolyphosphate) is added to detergent powder. Its main function is to act as water
softener by removing `Mg^(2+)` and `Ca ^(2+)` ions from hard water by forming stable soluble
complexes.
Correct Answer is `=>` (C) to prevent rapid drying
Q 2878280106

The substance' added to harden the soap is

(A)

sodium silicate

(B)

sodium carbonate

(C)

Soap stone

(D)

All of these

Solution:

Glycerol is added to shaving soap to prevent rapid drying while to enhance the
leathering property of soap, a gum called rosin is added to them. It forms sodium
rosinate which lathers well. Soap granules are dried miniature soap bubbles.
Builders/fillers make the soap act more rapidly. Builder or filler (e.g. sodium
tripolyphosphate) is added to detergent powder. Its main function is to act as water
softener by removing `Mg^(2+)` and `Ca ^(2+)` ions from hard water by forming stable soluble
complexes.
Correct Answer is `=>` (D) All of these
Q 2808380208

The reaction that takes place in soap making is called saponification. Basically soap is sodium or potassium salts of

(A)

long chain monocarboxylic acids

(B)

glycerol

(C)

long chain dicarboxylic acids

(D)

long chain tricarboxylic acids

Solution:

Glycerol is added to shaving soap to prevent rapid drying while to enhance the
leathering property of soap, a gum called rosin is added to them. It forms sodium
rosinate which lathers well. Soap granules are dried miniature soap bubbles.
Builders/fillers make the soap act more rapidly. Builder or filler (e.g. sodium
tripolyphosphate) is added to detergent powder. Its main function is to act as water
softener by removing `Mg^(2+)` and `Ca ^(2+)` ions from hard water by forming stable soluble
complexes.
Correct Answer is `=>` (A) long chain monocarboxylic acids
Q 2808280108

Saponification of an oil or fat gives soap and

(A)

rnethanol

(B)

ethanol

(C)

pentanol

(D)

glycerol

Solution:

Glycerol is added to shaving soap to prevent rapid drying while to enhance the
leathering property of soap, a gum called rosin is added to them. It forms sodium
rosinate which lathers well. Soap granules are dried miniature soap bubbles.
Builders/fillers make the soap act more rapidly. Builder or filler (e.g. sodium
tripolyphosphate) is added to detergent powder. Its main function is to act as water
softener by removing `Mg^(2+)` and `Ca ^(2+)` ions from hard water by forming stable soluble
complexes.
Correct Answer is `=>` (D) glycerol
Q 2589856717

Which of the following represents soap?
BCECE Mains 2015
(A)

` C_(17)H_(35)COOK`

(B)

` C_(17)H_(35)COOH`

(C)

` C_(51)H_(31)COOH`

(D)

`(C_(17)H_(35)COO)_2Ca`

Solution:

Soaps are the sodium or potassium salt of higher

fatty acids, e.g. `C_(17)H_(35)COOK` (potassium

stearate). These are obtained by alkaline

hydrolysis of oils and fats. The reaction is called

saponification .
Correct Answer is `=>` (A) ` C_(17)H_(35)COOK`
Q 2818280109

Which gives white colour to soap'?

(A)

`MnO`

(B)

`ZnO`

(C)

`CaO`

(D)

`PbO`

Solution:

Soaps are the sodium or potassium salt of higher

fatty acids, e.g. `C_(17)H_(35)COOK` (potassium

stearate). These are obtained by alkaline

hydrolysis of oils and fats. The reaction is called

saponification .
Correct Answer is `=>` (B) `ZnO`
Q 2878180006

To which class of organic compounds soap belongs'?

(A)

Aldehydes

(B)

Salts of organic acid

(C)

Esters

(D)

Amines

Solution:

Soaps are the sodium or potassium salt of higher

fatty acids, e.g. `C_(17)H_(35)COOK` (potassium

stearate). These are obtained by alkaline

hydrolysis of oils and fats. The reaction is called

saponification .
Correct Answer is `=>` (B) Salts of organic acid
Q 2848380203

Which one of the following is used to increase the weight of soap?

(A)

Starch

(B)

sodium carbonate

(C)

Both (a) and (b)

(D)

None of these

Solution:

Soaps are the sodium or potassium salt of higher

fatty acids, e.g. `C_(17)H_(35)COOK` (potassium

stearate). These are obtained by alkaline

hydrolysis of oils and fats. The reaction is called

saponification .
Correct Answer is `=>` (C) Both (a) and (b)
Q 2838280102

Toilet soap is a mixture of

(A)

calcium salt of fatty acids

(B)

potassium salt of fatty acids

(C)

fatty acids and alcohol

(D)

phenol and olive oil

Solution:

Soaps are the sodium or potassium salt of higher

fatty acids, e.g. `C_(17)H_(35)COOK` (potassium

stearate). These are obtained by alkaline

hydrolysis of oils and fats. The reaction is called

saponification .
Correct Answer is `=>` (B) potassium salt of fatty acids
Q 2838480302

By which one among the following mechanism, soap removes dirt (soil) from cloth'?

(A)

Soap dissolves the soil as such.

(B)

Soap reacts with soil and converts them into soluble silicates.

(C)

Soap takes away the oily part of the soil and thus separates the soil from the cloth.

(D)

The soap molecules bind with the soil, lift the soil and keep it suspended which can then the rinsed away.

Solution:

Soaps are the sodium or potassium salt of higher

fatty acids, e.g. `C_(17)H_(35)COOK` (potassium

stearate). These are obtained by alkaline

hydrolysis of oils and fats. The reaction is called

saponification .
Correct Answer is `=>` (D) The soap molecules bind with the soil, lift the soil and keep it suspended which can then the rinsed away.
Q 1835634562

Which of the following enhances leathering property of soap?
NCERT Exemplar
(A)

Sodium carbonate

(B)

Sodium rosinate

(C)

Sodium stearate

(D)

Trisodium phosphate

Solution:

Shaving soaps contain glycerol to prevent rapid drying. While preparing this soaps, a
gum called rosin is added to them. It forms sodium rosinate which lathers well.
Laundary soaps contain fillers like sodium rosinate, sodium silicate, borax and sodium
carbonate.

Trisodium polyphosphate is an important filler added to detergent powders and liquid
detergents.
Correct Answer is `=>` (B) Sodium rosinate
Q 1805534468

Compound which is added to soap to impart antiseptic properties is....
NCERT Exemplar
(A)

sodium laurylsulphate

(B)

sodium dodecylbenzenesulphonate

(C)

rosin

(D)

bithional

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (D) bithional

Glass

Q 2859680514

Match List I with List II and select the correct answer using the codes given below the lists.







List I (Metallic oxide) List II(Colour imparted to glass)
(A) Uranium oxide (1) Red
(B) Cuprous oxide (2) Blue
(C) Cobalt oxide (3) Green
(D) Chromium oxide (4) Yellow


(A)

`A →4 , B → 1, C → 2 , D → 3`

(B)

`A → 3 , B → 2 , C → 1 , D → 4`

(C)

`A → 4 , B → 2 , C → 1 , D → 3`

(D)

`A → 3 , B → 1 , C → 2 , D → 4`

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (A) `A →4 , B → 1, C → 2 , D → 3`
Q 2879078816

Which of the statements about glass are correct.?
I. Glass is a supercooled liquid having infinite viscosity.
II. Violet coloured glass is obtained. by adding `MnO_2`.
III. Glass is. a man made silicate.
IV. Glass is a crystalline substance.
Select the correct answer using the codes given below.

(A)

I, II and IV

(B)

II, Ill and IV

(C)

I, II and III

(D)

I and III

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (C) I, II and III
Q 2868780605

Crooke's glass contains `CeO_2` which

(A)

makes glass strong

(B)

makes glass unbreakable

(C)

cuts off UV rays

(D)

All of the above

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (C) cuts off UV rays
Q 2818680500

Which glass has the highest percentage of lead'?

(A)

Soda glass

(B)

Flint glass

(C)

Safety glass

(D)

Pyrex glass

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (B) Flint glass
Q 2888780607

The material used in soar cell contains

(A)

Glass

(B)

`Ce`

(C)

`Si`

(D)

`Ti`

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (C) `Si`
Q 2838680502

Which one of the following is incorrect about flint glass?

(A)

It is soft and transparent

(B)

It's refractive index is very high

(C)

It is `K_2O * PbO * 6SiO_2`

(D)

It does not break's on red hot

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (D) It does not break's on red hot
Q 2878680506

Reinforced glass has

(A)

oxides of alkaline metals

(B)

network of wires

(C)

`SiO_2`

(D)

layer of plastic

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (B) network of wires
Q 2818680509

Percentage of silica

(A)

increases brittleness of glass

(B)

decrease resistivity of glass

(C)

Both (a) and (b)

(D)

None of the above

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (C) Both (a) and (b)
Q 2828780601

For making optical and chemical resistant glass the substance used is

(A)

`Al_2O_3`

(B)

`Na_3AlF_6`

(C)

`B_2O_3`

(D)

`Na_2SiO_3`

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (D) `Na_2SiO_3`
Q 2809580418

Match List I and List II and choose the correct answer by the codes given below the lists.








List I (Chemical compounds) List II(Uses)
(A) Silver bromide (1) Etching of glass
(B) Hydrogen peroxide (2) Photography
(C) Hydrofluoric acid (3) Purification of air
(D) Ozone (4) Bleaching agent


(A)

`A →2 , B → 3, C → 1 , D → 4`

(B)

`A → 2 , B → 4 , C → 1 , D → 3`

(C)

`A → 3 , B → 1 , C → 4 , D → 2`

(D)

`A → 4 , B → 2 , C → 1 , D → 3`

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (B) `A → 2 , B → 4 , C → 1 , D → 3`
Q 2858780604

Etching of glass is based on

(A)

solubility of glass in `HF`

(B)

softening of glass over a wide range of temperature

(C)

glass being a super cooled liquid

(D)

All of the above

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (A) solubility of glass in `HF`
Q 2878780606

Glass is actually

(A)

a crystalline solid

(B)

an ionic solid

(C)

an elastic solid

(D)

a virtified liquid

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (D) a virtified liquid
Q 2818580409

The principal constituent of pyrex glass is

(A)

`Zn`

(B)

`B`

(C)

`Pb`

(D)

`Cl`

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (B) `B`
Q 2858680504

Which one of the following type of glass has a layer of plastic?

(A)

Safety glass

(B)

Ground glass

(C)

Reinforced glass

(D)

Borosilicate glass

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (A) Safety glass
Q 2878580406

In the manufacture of glass, the addition of `MnO_2` gives

(A)

yellow colour

(B)

red colour

(C)

violet colour

(D)

light pink colour

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (D) light pink colour

Ink and Paper

Q 2828180901

Compound used for shining of ink is

(A)

dextrans

(B)

Resin

(C)

eosine

(D)

None of these

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (B) Resin
Q 2808780608

Which gives red colour to ink'?

(A)

Eosine

(B)

Methylene

(C)

`FeSO_4`

(D)

`BaCl_2`

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (A) Eosine
Q 2848880703

Which compound is used to stop hydrolysis of organic compound in ink?

(A)

Carboxylic acid

(B)

Carbolic acid

(C)

Hydrochloric acid

(D)

None of these

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (C) Hydrochloric acid
Q 2878880706

Stamp pad is a

(A)

aniline ink

(B)

permanent ink

(C)

Both (a) and (b)

(D)

None of these

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (C) Both (a) and (b)
Q 2818880700

Which acts as a fungicide in ink?

(A)

`H_2CO_3`

(B)

`H_3BO_3`

(C)

Both (a) and (b)

(D)

None of these

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (C) Both (a) and (b)
Q 2858880704

Which gives blue black colour in ink?

(A)

Tannic acid and `FeSO_4`

(B)

Napthalene black

(C)

Both (a) and (b)

(D)

None of the above

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (C) Both (a) and (b)
Q 2838880702

Raw material used in the manufacturing of aniline ink is

(A)

eosine. gycerol, `FeSO_4` phenol

(B)

eosine, alcohol , tannig acid, phenol

(C)

eosine, qlycerol, carbonic acid, phenol

(D)

eosine, glycerol, dil `HCl`, phenol

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (C) eosine, qlycerol, carbonic acid, phenol
Q 2819480319

Match List I and List II and select the correct answer using the codes given below the lists.








List IList II
(A) GIass (1) Soap
(B) Cement (2) Supercooled liquid
(C) `C_(12)H_(35)COONa` (3) Mixture
(D) Paper (4) Cellulose


(A)

`A →3 , B → 2, C → 1 , D → 4`

(B)

`A → 2 , B → 3 , C → 1 , D → 4`

(C)

`A → 4 , B → 1 , C → 3 , D → 2`

(D)

`A → 1 , B → 4 , C → 2 , D → 3`

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (B) `A → 2 , B → 3 , C → 1 , D → 4`

Cement

Q 2809680518

Match List I and List II and choose the correct answer by the codes given below the lists.








List I(material) List II(Important ingredient)
(A) Cement (1) Sodium salt of fatty acids
(B) Glass (2) Carbon black
(C) Ink (3) Silica in the form of quartz
(D) Soap (4) Aluminates and silicates
of calcium


(A)

`A →4 , B → 3, C → 2 , D → 1`

(B)

`A → 1 , B → 2 , C → 3 , D → 4`

(C)

`A → 1 , B → 3 , C → 2 , D → 4`

(D)

`A → 4 , B → 2 , C → 3 , D → 1`

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (A) `A →4 , B → 3, C → 2 , D → 1`
Q 2878180906

Presence of gypsum in cement gives

(A)

setting time low

(B)

setting time high

(C)

hardness

(D)

softness

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (A) setting time low
Q 2888180907

Which is correct about cement?

(A)

Gypsum is added to regulate setting time of cement

(B)

White cement does not contain iron

(C)

Lime is main constituent of cement

(D)

All of the above are correct

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (D) All of the above are correct
Q 2838191002

Which one of the following components of cement sets at the slowest rate?

(A)

Dicalcium silicate

(B)

Tricalcium silicate

(C)

Tricalcium aluminate

(D)

Tetracalcium aluminoferrite

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (D) Tetracalcium aluminoferrite
Q 2878191006

During setting of cement the reaction is

(A)

hydrolysis of cement

(B)

dehydration of cement

(C)

hydration of cement

(D)

hydrolysis and hydration of cement

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (D) hydrolysis and hydration of cement
Q 2889080817

Match List I and List II and choose the correct answer by the codes given below the lists.








List I(Substance) List II(Raw material)
(A) Glass (1) Fat and caustic alkali
(B) Soap (2) Cellulose fibre and
gelatin
(C) Paper (3) Silicates of calcium and
aluminium
(D) Cement (4) Silica


(A)

`A →3 , B → 2, C → 1 , D → 4`

(B)

`A → 4 , B → 2 , C → 1 , D → 3`

(C)

`A → 3 , B → 1 , C → 2 , D → 4`

(D)

`A → 4 , B → 1 , C → 2 , D → 3`

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (D) `A → 4 , B → 1 , C → 2 , D → 3`
Q 2848180903

Mortar is a mixture of

(A)

cement: + sand + water

(B)

sand + iron

(C)

cement + sand + iron

(D)

None of the above

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (A) cement: + sand + water
Q 2818180909

A major constituent of cement besides lime is

(A)

silica

(B)

alumina

(C)

iron oxide

(D)

maonesia

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (A) silica
Q 2818191000

The function of sand in mortar is

(A)

to prevent excessive shrinkage which might result in cracks

(B)

to make the mass compact

(C)

to decrease the plasticity of mass

(D)

to increase the hardness

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (A) to prevent excessive shrinkage which might result in cracks
Q 2848191003

Excess of silica in cement

(A)

increase setting time

(B)

decrease setting time

(C)

increase hardness

(D)

helps in hydrolysis

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (B) decrease setting time
Q 2808191008

Concrete with iron frame-work is known as

(A)

ACC

(B)

RCC

(C)

RDC

(D)

Clinker

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (B) RCC

Paints

Q 2838291102

Which oxides are used as drier in paints?

(A)

`MnO , PbO , CdO`

(B)

`MnO , CoO , NiO`

(C)

`NiO , K_2O , CdO`

(D)

`K_2O , MgO , CaO`

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (B) `MnO , CoO , NiO`
Q 2818291100

Which of the following is a yellow pigment?

(A)

`PbCrO_4 * PbO`

(B)

`PbCrO_4 `

(C)

`Pb_3O_4`

(D)

`PbS+PbO`

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (B) `PbCrO_4 `
Q 2868291105

White lead is

(A)

`PbCO_3`

(B)

`PbCO_3* PbO`

(C)

`2PbCO_3 * Pb(OH)_2`

(D)

`2PbSO_4 * PbO`

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (C) `2PbCO_3 * Pb(OH)_2`
Q 2859178914

Consider the following statements regarding aluminium paint.
I. It is fairly good heat-resistant.
II. It possesses good electrical resistance.
III. It cannot be used for hot water pipe.
Which of the statements given above is/are correct?

(A)

I and III

(B)

only I

(C)

I and II

(D)

II and III only

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (A) I and III
Q 2859280114

Following questions consist of two statements labelled as Statement I and Statement II. Examine both the statements carefully and match the correct choice according to the codes given below.
Statement I : Lithopone is a better white pigment than white lead.
Statement II : Lithopone `(ZnS +BaSO_4)` remains unaffected by the `H_3S` present in atmosphere.

(A)

Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I

(B)

Both the statements are true but Statement II is not the correct explanation of Statement I.

(C)

Statement I is true, but Statement II is false

(D)

Statement I is false, but Statement II is true.

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (A) Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I
Q 2819078819

Which among the following are the properties of good paint?
I. The paint should be opaque and have high covering power.
II. The solid particles in paint should reflect much of the destructive light to ensure long life of the paint.
III. Combination of pigments, e.g. white lead and `TiO_2` give better result.
IV. Addition of plasticiser destroy the elasticity of the film and leads to cracking.
Select the correct answer using the codes given below.

(A)

I, II and IV

(B)

I , II and III

(C)

II and III

(D)

I and III

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (B) I , II and III
Q 2818191009

Lithopone, a substitute of white lead is

(A)

`BaSO_4+ZnS`

(B)

`BaSO_4+ZnO`

(C)

`Pb_2O_4`

(D)

`Pb(CH_3COO)_2`

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (A) `BaSO_4+ZnS`
Q 2858291104

Red lead is

(A)

`Pb_3O_4`

(B)

`PbO_2`

(C)

`PbO`

(D)

`Pb_4O_3`

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (A) `Pb_3O_4`
Q 2828491301

Fillers are used to

(A)

increase the volume of paints

(B)

increase the concentration of paint,;

(C)

increase both volume and weight of paints

(D)

None of the above

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (B) increase the concentration of paint,;

Safety Matches and Gun Powder

Q 2808491308

Gun powder is a mixture of

(A)

`KNO_3+S +` charcoal

(B)

`KHCO_3+S+` charcoal

(C)

`KNO_3+S`+ coal

(D)

All of the above

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (A) `KNO_3+S +` charcoal
Q 2888491307

Which one of the following is used on the side of matches box'?

(A)

`P_2S_3`

(B)

`P_2S_5`

(C)

powdered glass + red P

(D)

All of the above

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (C) powdered glass + red P
Q 2859280114

Following questions consist of two statements labelled as Statement I and Statement II. Examine both the statements carefully and match the correct choice according to the codes given below.
Statement I : Red phosphorus is used for making matehes.
Statement II : Red phosphorus is non-poisonous and has high ignition temperature.

(A)

Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I

(B)

Both the statements are true but Statement II is not the correct explanation of Statement I.

(C)

Statement I is true, but Statement II is false

(D)

Statement I is false, but Statement II is true.

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (A) Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I
Q 2868491305

Match stick have some solid mixture at one end which is

(A)

antimony sulphide + potassium chlorate + potassium dichromate

(B)

antimony sulphide + lead + sodium chlorate

(C)

antimony sulphide + potassium chlorate + potassium bicarbonate

(D)

potassium chlorate + lead + lead trisulphide

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (A) antimony sulphide + potassium chlorate + potassium dichromate
Q 2818591400

During explosion of gunpowder, which of the following gases are evolved in the proportion of 1 : 3

(A)

Oxygen : nitrogen

(B)

Nitrogen : carbon monoxide

(C)

Nitrogen : carbon dioxide

(D)

Carbon dioxide : nitrogen

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (C) Nitrogen : carbon dioxide

Plastics, Fibers and Natural Rubber

Q 2818791600

Which is an example of thermosetting polymer'?

(A)

Polythene

(B)

Neoprene

(C)

PVC

(D)

Bakelite

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (D) Bakelite
Q 2838591402

Artificial silk is

(A)

rayon

(B)

nylon-6

(C)

nylon-66

(D)

None of these

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (A) rayon
Q 2808691508

Which of the following is a polyamide

(A)

Nylon

(B)

orlon

(C)

Tefflon

(D)

Terylene

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (A) Nylon
Q 2818891700

Terylene is made by polymerisation of terepythalic acid with

(A)

ethylene glycol

(B)

phenol

(C)

ethanol

(D)

catechol

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (A) ethylene glycol
Q 2848891703

Process involving heating of rubber with sulphur is called

(A)

galvanisation

(B)

volcarisation

(C)

bessemerisation

(D)

sulphonation

Solution:

Basically, all soaps are made by boiling fats or oils with suitable hydroxide. Variations
are made by adding different raw materials. Sodium laurylsulphate and sodium
dodecylbenzenesulphonate are anionic detergents.
A gum rosin added to soap to make it lather well. Bithional is added to soaps to impart
antiseptic properties to soap
Correct Answer is `=>` (B) volcarisation
Q 1804180058

Which of the following polymers of glucose is stored by animals?
NCERT Exemplar
(A)

Cellulose

(B)

Cellulose

(C)

Amylopectin

(D)

Glycogen

Solution:

Glycogen is a polymer of glucose found in liver, brain and muscles of animals.
Cellulose is a polymer found in plant while amylose and amylopectin are structural units
of starch.
Correct Answer is `=>` (D) Glycogen
Q 2859280114

Following questions consist of two statements labelled as Statement I and Statement II. Examine both the statements carefully and match the correct choice according to the codes given below.
Statement I : Rayon is a semisynthetic polymer and is taken as a better choice than cotton fabric.
Statement II : Mechanical and aesthetic properties of cellulose can be improved by acetylation.

(A)

Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I

(B)

Both the statements are true but Statement II is not the correct explanation of Statement I.

(C)

Statement I is true, but Statement II is false

(D)

Statement I is false, but Statement II is true.

Solution:

Glycogen is a polymer of glucose found in liver, brain and muscles of animals.
Cellulose is a polymer found in plant while amylose and amylopectin are structural units
of starch.
Correct Answer is `=>` (A) Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I
Q 2888691507

Natural rubber is

(A)

Polyisoprene

(B)

polyvinal chloride

(C)

polychloroprene

(D)

polyfluorethylene

Solution:

Glycogen is a polymer of glucose found in liver, brain and muscles of animals.
Cellulose is a polymer found in plant while amylose and amylopectin are structural units
of starch.
Correct Answer is `=>` (A) Polyisoprene
Q 2888791607

Monomer of teflon is

(A)

diffuoroethane

(B)

monofluoroethane

(C)

tetrafluoroethene

(D)

tetrafiuoroethane

Solution:

Glycogen is a polymer of glucose found in liver, brain and muscles of animals.
Cellulose is a polymer found in plant while amylose and amylopectin are structural units
of starch.
Correct Answer is `=>` (C) tetrafluoroethene
Q 2808891708

Which of the following is used to make non-stick cookware

(A)

PVC

(B)

Polystrene

(C)

Polyethylene

(D)

Polytetrafluoreoethylene

Solution:

Glycogen is a polymer of glucose found in liver, brain and muscles of animals.
Cellulose is a polymer found in plant while amylose and amylopectin are structural units
of starch.
Correct Answer is `=>` (D) Polytetrafluoreoethylene
Q 2848791603

The substance used to harden the rubber for tyre manufacture is

(A)

wax

(B)

1 , 3- butadine

(C)

`CaC_2`

(D)

carbon black

Solution:

Glycogen is a polymer of glucose found in liver, brain and muscles of animals.
Cellulose is a polymer found in plant while amylose and amylopectin are structural units
of starch.
Correct Answer is `=>` (D) carbon black
Q 2818891709

Bakelite is a polymer of

(A)

Formaldehyde and acetic acid

(B)

formaldeyde and phenol

(C)

ethaylalcohol and phenol

(D)

acetic acid and benzene

Solution:

Glycogen is a polymer of glucose found in liver, brain and muscles of animals.
Cellulose is a polymer found in plant while amylose and amylopectin are structural units
of starch.
Correct Answer is `=>` (B) formaldeyde and phenol
Q 1814580450

The commercial name of polyacrylonitrile is ......... .
NCERT Exemplar
(A)

dacron

(B)

orion (acrilan)

(C)

PVC

(D)

bakelite

Solution:

The commercial name of polyacrylonitrile is orion (acrilan).
Correct Answer is `=>` (B) orion (acrilan)

Fertilizers

Q 2819080819

Match List l with List II and select the correct answer from the codes g·iven below the lists:







List I(Fertilizers) List II(Chemical formula)
(A) Urea (1) `(NH_4)_2SO_4`
(B) Nitrolim (2) `NH_2CONH_2`
(C) Thomas Slag (3) `CaCN_2`
(D) Sindri fertiliser (4) `Ca_3(PO_4)_2 * CaSiO_3`


(A)

`A →2 , B → 3, C → 4 , D → 1`

(B)

`A → 1 , B → 2 , C → 3 , D → 4`

(C)

`A → 4 , B → 3 , C → 2 , D → 1`

(D)

`A → 2 , B → 3 , C → 1 , D → 4`

Solution:

The commercial name of polyacrylonitrile is orion (acrilan).
Correct Answer is `=>` (A) `A →2 , B → 3, C → 4 , D → 1`
Q 2849878713

At high temperature, nitrogen combines with calcium carbide to give

(A)

calcium cyanamide

(B)

calcium cyanide

(C)

calcium carbonate

(D)

calcium nitrate

Solution:

The commercial name of polyacrylonitrile is orion (acrilan).
Correct Answer is `=>` (A) calcium cyanamide
Q 2859278114

The common element present in artificial fertilizers are

(A)

nitrogen phosphorus and poteassium

(B)

nitrogen , phosphorus and sodium

(C)

calcium , potassium and sodium

(D)

all elements of periodic tables

Solution:

The commercial name of polyacrylonitrile is orion (acrilan).
Correct Answer is `=>` (A) nitrogen phosphorus and poteassium
Q 2879180016

Consider the following statements:
I. The main sources of bio fertilizers are bacteria. cyanobacteria and fungi.
II. Biofertilizer and green manures do not pollute the soil.
III. Potash fertilizer evaluated as `K_2O`.
IV. Phosphatic fertilizer content is expressed as `P_2O_5`.
Select the correct answer using the codes given below.

(A)

I, II and Ill

(B)

II , III and IV

(C)

I, II and IV

(D)

All of the above

Solution:

The commercial name of polyacrylonitrile is orion (acrilan).
Correct Answer is `=>` (D) All of the above
Q 2859280114

Following questions consist of two statements labelled as Statement I and Statement II. Examine both the statements carefully and match the correct choice according to the codes given below.
Statement I : Pure potash is a good farm manure.
Statement II : Potash minerals are vital to plants, assisting starch formation.

(A)

Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I

(B)

Both the statements are true but Statement II is not the correct explanation of Statement I.

(C)

Statement I is true, but Statement II is false

(D)

Statement I is false, but Statement II is true.

Solution:

The commercial name of polyacrylonitrile is orion (acrilan).
Correct Answer is `=>` (D) Statement I is false, but Statement II is true.
Q 2859280114

Following questions consist of two statements labelled as Statement I and Statement II. Examine both the statements carefully and match the correct choice according to the codes given below.
Statement I : Legumes revive the soil fertility.
Statement II : Microbes in the root nodules of leguminous plant fix the atmospheric nitrogen.

(A)

Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I

(B)

Both the statements are true but Statement II is not the correct explanation of Statement I.

(C)

Statement I is true, but Statement II is false

(D)

Statement I is false, but Statement II is true.

Solution:

Correct Answer is `=>` (A) Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I
Q 2829180011

Which of the following are nitrogen fertilizers?
I. Calcium cyanamide
II. Urea
Ill. Bone ash
IV. Ammonium sulphate
Select the correct answer using the codes given below.

(A)

(I), (II) and (Ill)

(B)

(I), (II) and (IV)

(C)

(II), (Ill) and (IV)

(D)

(I), (Ill) and (IV)

Solution:

Correct Answer is `=>` (B) (I), (II) and (IV)
Q 2879178916

Which of the following statements are true about urea?
I. Urea is the first organic compound which is synthesised in the laboratory.
II. Urea is the best water soluble nitrogeneous fertilizer.
III. Urea leaves only `CO_2` after ammonia has been assimilated by plants.

(A)

I and II

(B)

II and Ill

(C)

I and Ill

(D)

All of these

Solution:

Correct Answer is `=>` (D) All of these
Q 2819778619

The correct sequence in decreasing order of the percentage of nitrogen in the given compounds is

(A)

urea > arnmonium chloride > ammonium nitrate > ammonium nitrite

(B)

urea > ammonium nitrite > ammonium nitrate > ammonium chloride

(C)

urea > ammonium nitrite > ammonium chloride > ammonium nitrate

(D)

ammonium nitrate > ammonium nitrite > ammonium chloride > urea

Solution:

Correct Answer is `=>` (B) urea > ammonium nitrite > ammonium nitrate > ammonium chloride
Q 2839180012

Consider the following statements.
I. Nitrogen, phosphorus and potassium are the major elements needed in large amounts for the healthy growth of a plant.
II. NPK is called as Kissan khad.
III. Mixed fertilizers provide nitrogen, phosphorus and potassium to the plants.
IV. Green manure helps in enriching the soil in nitrogen and phosphorus.
Which of the above statements are correct?

(A)

I, II and Ill

(B)

II , III and IV

(C)

I , III and IV

(D)

All of these

Solution:

Correct Answer is `=>` (D) All of these
Q 2869878715

Underground water is maximum contaminated by

(A)

Nitrogeneous fertilizer

(B)

Phosphatic fertilizer

(C)

Potash fertilizer

(D)

Natural fertilizer

Solution:

Correct Answer is `=>` (A) Nitrogeneous fertilizer
Q 2849478313

Which of the following refers to '' green manure ''

(A)

putting `NPK` manure

(B)

Putting farmyard

(C)

Growing leguminous crops and phoughing it

(D)

Applying slurry manure obtained from gobar gas plants

Solution:

Correct Answer is `=>` (C) Growing leguminous crops and phoughing it
Q 2869278115

Which one of the following can not be used as a nitrogeneous fertilizer ?

(A)

`CaCN_2`

(B)

`NH_4NO_3`

(C)

`HNO_3`

(D)

`NH_2CONH_2`

Solution:

Correct Answer is `=>` (C) `HNO_3`
Q 2849678513

Application of nitrogeneous manure to a plant causes

(A)

vigorous vegetative growth

(B)

early flowering

(C)

early fruiting

(D)

growth retardation clue to toxity of `NH_3`

Solution:

Correct Answer is `=>` (A) vigorous vegetative growth
Q 2889778617

Which of the following nitrogeneous fertilizer is not very effective in acidic soil?

(A)

Ammonium sulphate

(B)

urea

(C)

Nitrolium

(D)

Calciurn cyanamide

Solution:

Correct Answer is `=>` (A) Ammonium sulphate
Q 2809378218

Lime is sometimes applied to soil in order to

(A)

control the acidity of soil

(B)

increases the alkalinty of soil

(C)

make the soil more porous

(D)

restore nitrates of the soil

Solution:

Correct Answer is `=>` (A) control the acidity of soil
Q 2819278119

The metal atom which is present in superphosphate is

(A)

Sodium `(Na)`

(B)

Potassium `(K)`

(C)

Calcium `(Ca)`

(D)

magnesium `(Mg)`

Solution:

Correct Answer is `=>` (C) Calcium `(Ca)`
Q 2819378210

Which one of the following is not a nitrogeneous fertilizer

(A)

`Ca(CN)_2`

(B)

`CaCN_2`

(C)

`NH_4 NO_3`

(D)

Urea

Solution:

Correct Answer is `=>` (A) `Ca(CN)_2`
Q 2809578418

Which one of the following contains maximum percentage of nitrogen by mass

(A)

Urea

(B)

Ammonium cyanide

(C)

Ammonium carbonate

(D)

Ammonium nitrate

Solution:

Correct Answer is `=>` (B) Ammonium cyanide
Q 2839378212

What is the composition of nitrolim - a chemical fertilizer

(A)

Nitrogen and limestone

(B)

calcium carbide and nitrogen

(C)

calcium carbide carbon

(D)

None of the above

Solution:

Correct Answer is `=>` (D) None of the above
Q 2889278117

Which of the following substances is used as a fertilizer

(A)

`K_2SO_4 * Al_2 (SO_4)_3 * 24H_2O`

(B)

`CaCN_2`

(C)

`Ca (H_2PO_4)_2 * H_2O +2 (CaSO_4*2H_2O)`

(D)

both (b) and (c).

Solution:

Correct Answer is `=>` (A) `K_2SO_4 * Al_2 (SO_4)_3 * 24H_2O`
Q 2839878712

Urea on hydrolysis gives

(A)

only ammonia

(B)

only carbon dioxide

(C)

arnmonia and carbon dioxide

(D)

None of the above

Solution:

Correct Answer is `=>` (C) arnmonia and carbon dioxide
Q 2809178918

Consider the following statements.
I. Plants require nitrogen for growth and protein content.
II. Phosphorus is needed for stimulating growth, ripening of fruits and protecting from diseases.
III. Potassium is required for the development of healthy roots and aids ripening of cereals and fruits.
Which of the above statements are correct?

(A)

I and II

(B)

II and Ill

(C)

I and Ill

(D)

All of these

Solution:

Correct Answer is `=>` (D) All of these
Q 2819378219

The nitrogen in urea is present in the form of

(A)

ammonium

(B)

nitrate

(C)

nitrite

(D)

amide

Solution:

Correct Answer is `=>` (D) amide
Q 2819678510

Which of the following is a balanced fertilizer for plants

(A)

Urea

(B)

Compost

(C)

Nitrates

(D)

Ammonium sulphate

Solution:

Correct Answer is `=>` (B) Compost
Q 2869178915

Which of the following statements are true about the fertilizers?
I. They are nutrient specific.
II. They do not provide any humus to the soil.
III. They are absorbed slowly by the plants as they are not much soluble in water.

(A)

only II

(B)

I and II

(C)

II and III

(D)

All of these

Solution:

Correct Answer is `=>` (B) I and II
Q 2869180015

Consider the following statements relevant to fertilizers.
I. Superphosphate of lime contains `Ca(H_2PO_4)_2` and `CaSO_4`
II. Triple superphosphate is obtained by treating calcium phosphate with concentrated `H_2SO_4` acid.
III. Chief potash manures are `KCl , K_2SO_4` and `KNO_3`
IV. The chemical manures must be soluble in soil moisture.
Which of the above statements are correct?

(A)

I and II

(B)

II , III and IV

(C)

I , II and III

(D)

I , III and IV

Solution:

Correct Answer is `=>` (D) I , III and IV
Q 2869378215

NPK is also called as

(A)

vigyan urea

(B)

potash fertilizer

(C)

mixed fertilizer

(D)

nitrogeneous fertilizer

Solution:

Correct Answer is `=>` (C) mixed fertilizer
Q 2809678518

Superphosphate of lime is obtained from the reaction of

(A)

calcium carbonate with phosphoric acid

(B)

calcium phosphate with hydrochloric acid

(C)

calcium phosphate with ortho phosphoric acid

(D)

bones with gypsum

Solution:

Correct Answer is `=>` (C) calcium phosphate with ortho phosphoric acid
Q 2879378216

Which one has the highest percentage of nitrogen

(A)

Urea

(B)

`CAN`

(C)

`NH_4NO_3`

(D)

`CaNO_3`

Solution:

Correct Answer is `=>` (A) Urea
Q 2879578416

Potash fertilizers are evaluated as

(A)

`KO_2`

(B)

`K_2O`

(C)

`K`

(D)

`K_2O_2`

Solution:

Correct Answer is `=>` (B) `K_2O`
Q 2869678515

Nodules with nitrogen fixing bacteria are present in

(A)

Mustard

(B)

Rice

(C)

Gram

(D)

Cotton

Solution:

Correct Answer is `=>` (C) Gram

Other Important Compounds

Q 2839278112

Which of the following is not correctly matched

(A)

Galena - Lead sulphide

(B)

Blue vitriol - Copper sulphate

(C)

Plaster of paris - calcium sulphate hemihydrate

(D)

Calomel - Mercurous chloride

Solution:

Correct Answer is `=>` (B) Blue vitriol - Copper sulphate
Q 2818091800

Bronze is often used to make statues and medals whereas brass is used in making utensils , scientific apparatus and eartridges. Both brass and bronze are copper containing alloys , yet they differ in their chemical composition for additionally contaniing

(A)

zinc in brass and tin in bronze

(B)

chromium in brass and nickel in bronze

(C)

Nickel in brass and tin in bronze

(D)

Iron in brass and nickel in bronze

Solution:

Correct Answer is `=>` (A) zinc in brass and tin in bronze
Q 2819278110

Which one of the following chemicals is used in beauty parlours for hair setting

(A)

Sulphur based

(B)

Phosphorus based

(C)

Silicon based

(D)

Iron based

Solution:

Correct Answer is `=>` (C) Silicon based
Q 2859280114

Following questions consist of two statements labelled as Statement I and Statement II. Examine both the statements carefully and match the correct choice according to the codes given below.
Statement I : Magnesium alloys are used in the manufacture of aeroplane part.
Statement II : Magnesium alloys with metal to provide lightness and strength.

(A)

Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I

(B)

Both the statements are true but Statement II is not the correct explanation of Statement I.

(C)

Statement I is true, but Statement II is false

(D)

Statement I is false, but Statement II is true.

Solution:

Correct Answer is `=>` (A) Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I
Q 2839580412

Match List I and List II and choose the correct answer by the codes given below the lists.








List IList II
(A) Mercuric chloride (1) `K_2Cr_2O_7`
(B) Mercurous chloride (2) `HgCl_2`
(C) Potassium chromate (3) `K_2Cr_2O_4`
(D) Potassium dichromate (4) `Hg_2Cl_2`


(A)

`A →4 , B → 2, C → 3 , D → 1`

(B)

`A → 4 , B → 2 , C → 1 , D → 3`

(C)

`A → 2 , B → 3 , C → 1 , D → 4`

(D)

`A → 2 , B → 4 , C → 3 , D → 1`

Solution:

Correct Answer is `=>` (D) `A → 2 , B → 4 , C → 3 , D → 1`
 
SiteLock