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`50 mL` of each gas `A` and of gas `B` takes `150 and 200` seconds respectively for effusing through a pin hole under the similar conditon. If molecular mass of gas `B` is `36`, then the molecular mass of gas `A` will beA. `96`B. `128`C. `32`D. `64` |
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Answer» Correct Answer - C `(V_(A))/(t_(B))//(VB)/(t_(B))=sqrt((M_(B))/(M_(A)))` `implies (200)/(150)=sqrt((36)/(M_(A)))implies(4)/(3)=sqrt((36)/(M_(A)))` `implies(16)/(9)=(36)/(M_(A))implies M_(A)=(81)/(4)=20.25` So, most approximate answer is `32`. |
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