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Question 600084
JEE Chemistry · Hard

Mole Concept and Stoichiometry: Empirical Formula MCQ

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Empirical FormulaHardQuestion 600084

Question

A compound has 75% C and 25% H (by mass). Molecular mass = 16. Molecular formula is:
  1. A
    CH₂
  2. B
    CH₄
    Correct
  3. C
    C₂H₄
  4. D
    C₂H₆

Correct answer

CH₄

Explanation

C: 75/12=6.25; H: 25/1=25. Ratio=1:4 → EF = CH₄. EF mass = 16 = M. So MF = CH₄ (methane).

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