Equal volumes of hydrogen and oxygen gasses of atomic weights 1 and 16 respectively are found to exert equal pressure on the walls of two separate containers the ratio of rms speed of hydrogen and oxygen gas is

Options

A. `1:4`
B. `4:1`
C. `1:32`
D. `32:1`

Answer

B

Explanation

`C_(1) prop (1)/(sqrt(M_(1))) and C_(2)=(1)/(sqrt(M_(2)))(C_(2))/(C_(1))=sqrt((M_(1))/(M_(2)))=sqrt((1)/(16))=(1)/(4)`
`therefore (C_(1))/(C_(2))=(4)/(1)`