(This question may have multiple correct answers)
hydrogen
parahydrogen
deuterium
tritium
Lavoisier
Cavendish
Dalton
Newton
one proton, one electron and two neutrons
one proton, two electrons and one neutron
two protons and one electron
one proton, one electron and one neutron
(This question may have multiple correct answers)
Among protium, deuterium and tritium, protium has largest atomic radius
Absolutely pure ortho hydrogen is formed at 20 K
Atomic weight of deuterium is 3 and that of hydrogen is 2
Para and ortho hydrogen possess same chemical properties
`Ca_3(PO_4)_ 2`
`Na_3PO_4`
`Na_6P_6O_(18)`
`Na_2HPO_4`
cold water
dil. `H_2SO_4`
dil. `HCl`
hot 20 % `NaOH`
`Ca^( 2+)`
`Na^+`
`Cl^-`
`K^+`
`ZnSO_4+H_2`
`ZnSO_4`
`ZnSO_4+SO_2+H_2O`
None of the above
over water
over mercury
over alcohol
None of these
I and II
only III
Ill and IV
IV and I
hydrogenation
occulusion
evaporation
halogenation
Pt
Na
Ru
P
`ZnO * C_2 O_3`
`ZnO * C_2 O_4`
`ZnO * CrO`
`ZnO * Cr_2O_3`
Hydrogen atom with excess of energy
Hydrogen ions in excited state
hydrogen molecule with excess of energy
solvated proton
Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I
Both Statement I and Statement II are true but Statement II is not the correct explanation of Statement I
Statement I is true, but Statement II is false.
Statement I is false, but Statement II is true.
it can catch fire
it is reduced by `H_2SO_4`
it is reduced by `H_2SO_4`
it decomposes by `H_2SO_4`
platinum
silver
Gold
All of these
copper
phosphorus
magnesium
mercury
reducing agent
oxidising agent
both reducing and oxidising agent
neither reducing nor oxidising agent
`CuO`
`Fe_2O_3`
`Al_2O_3`
`SnO_2`
`Zn`
`Pd`
`Al`
`K`
(This question may have multiple correct answers)
natural gas
Water
water gas
None of these
`Ca`
`Fe`
`K`
`Sr`
(This question may have multiple correct answers)
I and II
I and III
II and III
All of these
highly electropositive element
transitional metals
highly electronegative element
inner-transitional element
Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I
Both Statement I and Statement II are true but Statement II is not the correct explanation of Statement I
Statement I is true, but Statement II is false.
Statement I is false, but Statement II is true.
Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I
Both Statement I and Statement II are true but Statement II is not the correct explanation of Statement I
Statement I is true, but Statement II is false.
Statement I is false, but Statement II is true.
protium
deuterium
tritium
hydronium
solid `NH_3`
solid `SO_2`
solid `CO_2`
solid `N_2`
hardness
catenation property
tetravalen structure
variable valency
ionic
covalent
coordinate bond
metallic
diamond
graphite
full erenes
coal
the chemical bonds between any two carbon atoms in diamond are stronger
diamond is ionic whereas graphite is covalent
each carbon atom in diamond is chemically bonded to a greater number of neigllbouring carbon atoms
certain atoms in diamond are smaller in size
`CO_2+H_2` are formed
`H_2+O_2`+ steam are formed
`CO+H_2` are formed
None of the above
diamond
graphite
coal
charcoal
`CO`
`C_3O_2`
`CO_2`
`CO_3`
carbon dioxide
carbon monoxide
carbon suboxide
water
Carbon dioxide is heavier than air
The solubility of carbon dioxide decreases with increase in pressure
Carbon monoxide reduces metal oxides to metal
Carbon monoxide is used in the manufacture of methanol
sodium carbide
sodium formate
sodium acetate
sodium oxalate
red hot iron
red hot carbon
red hot silver
red hot lead
`CO_2`
`Cl_2`
`O_2`
`N_2`
Gaseous carbon dioxide
Liquid carbon dioxide
Solid carbon dioxide
Solid hydrogen oxide
Carbogen is an antidote for carbon monoxide poisoning
Foamite fire extinguisher contains solutions of aluminium sulphate and baking soda
Dry powder extinguisher contain sand and baking soda
All of the above
I and II
II and Ill
III and IV
II and IV
I , II and IV
II , III and IV
I , II and III
II and IV
I , III and IV
II , III and IV
I and II
All of these
I and II
II and Ill
only III
I and III
I and III
II and Ill
I and Ill
All of these
Both the statements are true and Statement II is the correct explanation of Statement I
Both the statements are true but Statement II is not the correct explanation of Statement I.
Statement I is true, but Statement II is false
Statement I is false, but Statement II is true.
Both the statements are true and Statement II is the correct explanation of Statement I
Both the statements are true but Statement II is not the correct explanation of Statement I.
Statement I is true, but Statement II is false
Statement I is false, but Statement II is true.
Both the statements are true and Statement II is the correct explanation of Statement I
Both the statements are true but Statement II is not the correct explanation of Statement I.
Statement I is true, but Statement II is false
Statement I is false, but Statement II is true.
Both the statements are true and Statement II is the correct explanation of Statement I
Both the statements are true but Statement II is not the correct explanation of Statement I.
Statement I is true, but Statement II is false
Statement I is false, but Statement II is true.
Both the statements are true and Statement II is the correct explanation of Statement I
Both the statements are true but Statement II is not the correct explanation of Statement I.
Statement I is true, but Statement II is false
Statement I is false, but Statement II is true.
List I | List II | ||
---|---|---|---|
(A) | `CO_2` | (1) | Fermentation |
(B) | Zymase | (2) | Non-metal |
(C) | Carbon | (3) | Fire extinguishing |
(D) | `CaCO_3` | (4) | Chalk |
`A → 2 , B → 3 , C → 1 , D → 4`
`A → 3 , B → 1 , C → 2 , D → 4`
`A → 1 , B → 3 , C → 4 , D → 2`
`A → 4 , B → 2 , C → 1 , D → 3`
(This question may have multiple correct answers)
diamond
graphite
coal
charcoal
good conductor and soft
non-conductor and soft
non-conductor and hard
good conductor and hard
lead sulphate
lead
ferrous sulphate
graphite
335 pm
154 pm
5 33 pm
None of these
as a lubricant
as a fuel
for lining the inside of the reactor as insulator
for reducing the velocity of neutrons
graphite combines with oxygen to form carbon dioxide but diamond does not
the atoms in each have dilferent masses
the crystal structure in diamond is different form that in graphite
All of the above
photosynthesis
fermentation
respiration
burning of oxygen
sand
sand + `Na_2CO_3`
sand + banking soda
sand and `K_2CO_3`
metal
non-metal
acids
None of the above
`H_2O`
`CO_2`
`N_2O_3`
`NO_2`
`Na_2CO_3`
`Li_2CO_3`
Both (a) and (b)
None of the above
formic acid
sulphuric acid
carbonic acid
acetic acid
`CO`
`C_3O_2`
`CO_2`
None of these
oxygen + carbon dioxide
oxygen + chlorine
oxygen + carbon monoxide
None of the above
Solid `CO_2` is known as drikold
Dry ice is used as a refrigerant
Dry ice sublimes on heating
Dry ice is covalent solid
Both the statements are true and Statement II is the correct explanation of Statement I
Both the statements are true but Statement II is not the correct explanation of Statement I.
Statement I is true, but Statement II is false
Statement I is false, but Statement II is true.
Both the statements are true and Statement II is the correct explanation of Statement I
Both the statements are true but Statement II is not the correct explanation of Statement I.
Statement I is true, but Statement II is false
Statement I is false, but Statement II is true.
Both the statements are true and Statement II is the correct explanation of Statement I
Both the statements are true but Statement II is not the correct explanation of Statement I.
Statement I is true, but Statement II is false
Statement I is false, but Statement II is true.
Planar
Linear
Octahedral
Tetrahedral
high cost
refractive index
extreme hardness
bad conductance
`C+2H_2O → CO+H_2`
`C+2H_2O → CO_2+2H_2O`
`2H_2O → 2H_2+O_2`
None of the above
Cold, solid calcium hydroxide
Cold solid calcium chloride
Heated copper oxide
Heated charcoal
List I | List II | ||
---|---|---|---|
(A) | Marble | (1) | Formation of urea |
(B) | Hydrated `CO_2` | (2) | `KOH` |
(C) | `CO_2` absorbs | (3) | `H_2CO_3` |
(D) | Use of `CO_2` | (4) | `CaCO_3` |
`A →4 , B → 3, C → 2 , D → 1`
`A →4 , B → 2 , C → 3 , D → 1`
`A → 1 , B → 2 , C → 3 , D → 4`
`A → 1 , B → 3 , C → 2 , D → 1`
formylation
fermentation
conversion
photosynthesis.
anthracite
bituminous
lignite
peal
peal
lignite
bituminous
anthracite
bleaching
oxidation
reduction
adsorption
steam in retort
super heated water
hot air
None of the above
cracking
destructive distillation
fractional distillation
None of the above
`H_2` and `CO`
`H_2 , CO` and `CH_4`
`H_2O` and `CO`
`CO` and `CH_4`
I and II
II and Ill
I and IV
I , II and IV
adsorption
carbonisation
decarboxylation
None of these
wood charcoal
coconut charcoal
animal charcoal
sugar charcoal
air and water
`CO , H_2` and `N_2`
`CO` and `N_2`
`CO` and `H_2`
Coal gas
Coal
Producer gas
`CO_2`
peat
lignite
bituminous
anthracite
ammonium dichromate
sodium peroxide
potassium permangnate
green vitriol
Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I
Both Statement I and Statement II are true but Statement II is not the correct explanation of Statement I
Statement I is true, but Statement II is false.
Statement I is false, but Statement II is true.
Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I
Both Statement I and Statement II are true but Statement II is not the correct explanation of Statement I
Statement I is true, but Statement II is false.
Statement I is false, but Statement II is true.
`Ca`
`C`
`Si`
`O`
`CO`
`NO`
`CN`
`O_2`
Priestley
Boyle
Scheele
Canvendish
`O_3 , CH_4`
`O_2 , O_3`
`SO_2 , CH_4`
`Na_2O , O_3`
solid state
liquid state
gaseous state
All of these
ozonised oxygen
`Na_2O_2`
`KO_2`
pyrogallol
allotropes
isomers
isotopes
isobars
`H_2O_2`
`Na_2O`
`NO`
`PbO`
`H_2 S_2 O_3`
`H_2SO_4`
`H_2SO_5`
`H_2S_2O_8`
acidic
basic
neutral
amphoteric
I and III
II and IV
III and IV
I and IV
`SiO_2`
`MgO`
`Na_2O`
`CaO`
`N_2` in both cases
`N_2` with ammonium dichromate and NO with barium azide
`N_2 O` with ammonium dichromate and `N_2` with barium azide
`N_2 O` with ammonium dichromate and `NO_2` with barium azide
Oxygen
Nitrogen
Sulphur
Phosphorus
`N_2`
`NO_2`
`N_2O`
`HNO_2`
exhabit the oxidation state of +5
have covalency greater than 4
exhabit orbital hybridisation
form oxides with oxidation states greater than +3
`N_2 < NO < N_2O_4 < N_2O_3 < N_2O`
`NO < N_2O < N_2O_4 < N_2O_5`
`N_2O < N_2O_3 < N_2O_4 < N_2O_5 < NO`
`N_2O < NO < N_2O_3 < N_2O_4 < N_2O_5`
boiling the acid
bubbling air through the warm acid
passing ammonia through acid
adding a little `Mg` powder
Calcium cyanate
Calcium acetate
Calcium cynamide
Calcium carbonate
`N`
`P`
`As`
`Sb`
`N_2O`
`N_2O_3`
`NO_2`
`N_2O_5`
conc. `H_2SO_4`
`P_4O_(10)`
`CaO`
anhydrous `CaCl_2`
Nitrogen
Bismuth
Antimony
Arsenic
Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I
Both Statement I and Statement II are true but Statement II is not the correct explanation of Statement I
Statement I is true, but Statement II is false.
Statement I is false, but Statement II is true.
Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I
Both Statement I and Statement II are true but Statement II is not the correct explanation of Statement I
Statement I is true, but Statement II is false.
Statement I is false, but Statement II is true.
oxygen
hydrogen
carbon dioxide
Both (a) and (b)
It is laughing gas
It is nitrous oxide
It is not a linear molecule
It is least reactive of all the oxides of nitrogen
is lighter than air
makes the bulb give more light
does not support combustion
is non-toxic
nitrogen
oxygen
hydrogen
None of the above
`NaNO_2`
`AgNO_2`
`Ba(NO_2)_2`
`NH_4NO_2`
it is poisonous
it combines with haemoglobin
it causes laughing hysteria
None of the above