Calcium burns in nitrogen to produce a white powder which dissolves in sufficient water to produce a gas A and an alka

### Question Asked by a Student from EXXAMM.com Team

Q 1179191016.     Calcium burns in nitrogen to produce a white powder which dissolves in sufficient water to produce a gas A and an alkaline solution. The solution on exposure to air produces a thin solid layer of B on the surface. Identify the compounds A and B.
JEE 1996
A

A = NH_3, B = CaCO_3

B

A = CH_4, B = CaCO_3

C

A = NH_3, B = NaCO_3

D

A = H_2O, B = MgCO_3

#### HINT

(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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