JEE Main 2019 Chemistry question

Chemistry Equilibrium JEE Main 2019

In which one of the following equilibria, ?

(A)2NO(g) ⇌ N(g) + O(g)
(B)2C(s) + O(g) ⇌ 2CO(g)Correct
(C)2HI(g) ⇌ H(g) + I(g)
(D)NO(g) + SO(g) ⇌ NO(g) + SO(g)

Answer: (B)

Solution

Only (B) has Δn ≠ 0.

Question ID VK-010795