Question

A white crystalline compound N when warmed with concentrated sulphuric acid gives a gas which fumes in moist air and which forms dense white fumes with ammonia. When N is warmed with sodium hydroxide solution a gas is evolved which turns moist red litmus blue.
A. Name each of gases evolved
B. What is N.

Answer 1

A: Hydrogen chloride gas (HCl)

and Ammonia(NH3)

N: Ammonium Chloride(NH4Cl)

Answer 2

A - HCl and NH3

B - NH4Cl