The density of a gas at STP is `2.86 gL^(-1).` Then, vapour density of gas will be :-

Options

A. 16
B. 32
C. 64
D. 48

Answer

B

Explanation

`PM = dRT`
`(1) M = ( 2. 86) ( 0. 0 8 21) (273)`
`V.D. = (M)/(2) = ( 2. 86 xx 0. 0 821 xx 273)/(2) = 32`