4 gm of sulphur dioxide gas diffuses from a container in 8 min. Mass of helium gas diffusing from the same container over the same time interval is :

Options

A. 0.5 g
B. 1 g
C. 2 g
D. None of these

Answer

b

Explanation

(b) `(n_(1).t_(2))/(n_(2).t_(1))=sqrt((M_(2))/(M_(1))), " "(w_(1))/(M_(1))xx(M_(2))/(w_(2))=sqrt((M_(2))/(M_(1)))`
`(w_(1))/(w_(2))=sqrt((M_(1))/(M_(2))), " "(w_(1))/(4)=sqrt((4)/(64))`
`implies" "w_(1)=1"gm"`