Back to Questions
NEET Chemistry QUESTION #1109
Question 1
Higher yield of NO in \(\text{N}_2(\text{g})+\text{O}_2(\text{g})\rightleftharpoons 2\text{NO}(\text{g})\), \(\Delta H=+180.7\ \text{kJ mol}^{-1}\):
  • B, C, D only
  • A, C, D only(Correct)
  • A, D only
  • B, C only
Correct Answer Explanation
Reaction is endothermic (\(\Delta H>0\)). By Le Chatelier's principle: (A) Higher temperature shifts equilibrium forward (endothermic) → higher NO yield ✓. (B) Lower temperature shifts backward → less NO ✗. (C) Higher [N\(_2\)] shifts equilibrium forward → more NO ✓. (D) Higher [O\(_2\)] shifts equilibrium forward → more NO ✓. Correct: A, C, D = option (2).