Question

On heating compound (A) gives a gas (B) which is constituent of air. The gas when treated with H₂ in the presence of catalyst gives another gas (C) which is basic in nature, (A) should not be ______.

पर्याय

• (NH₄)₂Cr₂O₇

• NH₄NO₂

• Pb(NO₃)₂

• NaN₃

Answer 1

On heating compound (A) gives a gas (B) which is constituent of air. The gas when treated with H₂ in the presence of catalyst gives another gas (C) which is basic in nature, (A) should not be Pb(NO₃)₂.

Explanation:

(NH₄)₂Cr₂O₇, NH₄NO₂, NaN₃ on heating gives N₂ gas which is present in the air in 77.16% by volume. N₂ on reaction with H₂ in the presence of catalyst gives ammonia (NH₃) which basic in character. But Pb(NO₃)₂ on heating produces brown-coloured NO₂ gas as well as oxygen gas.

\[\ce{2Pb(NO3)2 ->[\Delta] 2PbO + 4NO2 + O2 ^}\]