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Question

The relation between molecular mass (M) and vapour density (D) of gaseous substance is

(a) 2M=D

(b) M=D2

(c) M=2.8D

(d) M=2D

WBBSE Class X Physical Science Chemical Calculations 01 Mark 2022

Answer

(d) M = 2D

Explanation: Molecular mass is twice the vapour density of a substance.

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