JEE Chemistry · Medium

Mole Concept and Stoichiometry: Stoichiometry MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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StoichiometryMediumQuestion 600049

Question

For the reaction 4NH₃ + 5O₂ → 4NO + 6H₂O, if 2 mol NH₃ reacts with excess O₂, the moles of H₂O formed are:
  1. A
    2 mol
  2. B
    3 mol
    Correct
  3. C
    4 mol
  4. D
    6 mol

Correct answer

3 mol

Explanation

From stoichiometry: 4 mol NH₃ → 6 mol H₂O. So 2 mol NH₃ → 2×(6/4) = 3 mol H₂O.