A pre weighed vessel was filled with oxygen at N.T.P. and weighted.It was then evacuated, filled with `SO_(2)` at the same temperature and pressure, and again weighed. The weight of oxygen will be

Options

A. The same as that of `SO_(20`
B. `(1)/(2)` that of `SO_(2)`
C. Twice that of `SO_(2)`
D. One fourth that of `SO_(2)`

Answer

B

Explanation

`("M. wt. of " O_(2))/("M.wt . of "SO_(2))implies (M_(1))/(M_(2))implies(32)/(64)=(1)/(2)`
The weight of oxygen will be `(1)/(2)` that of `SO_(2)`