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
(d) M = 2D
Explanation: Molecular mass is twice the vapour density of a substance.
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