Correct Answer - C
Volume of `O_3` in 100 ml of ozonised `O_2`
`=100-90=10ml` (dissolved in turpentine)
Volume of `O_3` in 1 litre of ozonised `O_2=(10xx100)/(100)`
`=100ml`
volume of `O_2` in 1 litre `=1000-100=900ml`
Weight of `900ml` of `O_2` at S`TP=(900xx32)/(22400)`
`=1.286gm`
weight of `100 ml` of `O_3` at STP weighs`=0.214gm`
`22400ml` of `O_3` at STP weghs`=(0.214xx22400)/(100)`
`=47.94gm`
Molecular weight of `O_3=47.94`