Chemistry - Complete P-block Question with Solution | TestHub
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Reduction of aqueous nitrous acid with hydrogen azide gives two gases L and M (oxidation number of L is more than M). Gas L can also be obtained by disproportionation of anther gas N. Gas N on reaction with another gas O produces nitrosylhalide gas D is prepared through deacon's process.
List - I (Gases) | List - II (Characteristics) |
|---|---|
(P) [L] | (1) Colorless gas |
(Q) [M] | (2) Atomic orbitals that combine to form molecular orbitals are at identical energy levels. |
(R) [N] | (3) Involved in the formation of nitric acid through BirkelandEyde process |
(S) [O] | (4) Is formerd generally during reaction of metal present above generally hydrogen in reactivity series with |
| (5) Reacts with white waxy solid to produce diamagnetic gas |
Options:
Answer:
Solution:
(P) L = colourless gas ⇒ (1)
Also forms with white waxy solid giving diamagnetic gas ⇒ (5)
So P → 1,4,5
(Q) M = atomic orbitals of equal energy combine (MO theory idea) ⇒ (2)
Also involved in nitric acid formation (Birkeland–Eyde related steps) ⇒ (3)
So Q → 1,2,3
(R) N = formed in Birkeland–Eyde process (NO formation from air) ⇒ (3)
Also shows colourless gas and related NO chemistry ⇒ (1,5)
So R → 1,3,5
(S) O = formed from metal + HNO₃ reaction (like Mn + HNO₃ → H₂/NO type behaviour) ⇒ (2)