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Question 600019
JEE Chemistry · Hard

Mole Concept and Stoichiometry: Percentage Composition MCQ

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Percentage CompositionHardQuestion 600019

Question

A compound has the formula CₓHᵧ. Carbon content is 85.7%. What is x:y?
  1. A
    1:2
    Correct
  2. B
    1:3
  3. C
    1:4
  4. D
    2:3

Correct answer

1:2

Explanation

%H = 14.3%. C: 85.7/12 = 7.14; H: 14.3/1 = 14.3. Ratio = 1:2 → empirical formula CH₂. Example: C₂H₄ (ethylene) or C₃H₆.

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