An organic compound X containing carbon and hydrogen only has Vapour Density (V.D.) 14. The molecular formula of X is ............... (At. wt. of C=12, H=1)

ICSE Class 10 Chemistry PYQ · 2027 Specimen · Section A

1(xi)1 Mark · 2027 · Section A · 2027 Specimen

An organic compound X containing carbon and hydrogen only has Vapour Density (V.D.) 14. The molecular formula of X is ............... (At. wt. of C=12, H=1)

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C2H4

Reason — Molecular mass = 2 × Vapour Density = 2 × 14 = 28.

The molecular mass of C2H4 = 2(12) + 4(1) = 24 + 4 = 28, which matches. Hence, the molecular formula of X is C2H4.

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