50 mL each of gases A and B take 150 and 200 seconds respectively for effusing through a pin- hole under the similar conditions . If molecular mass of B is 36 , the molecular mass of A will be nearly

50 mL each of gases A and B take 150 and 200 seconds respectively for

1.	50 mL each of gases A and B take 150 and 200 seconds respectively for effusing through a pin- hole under the similar conditions . If molecular mass of B is 36 , the molecular mass of A will be nearly
Answer» 64 96 128 20 Solution :`(V_(A))/(t_(A)) xx (t_(B))/(V_(B)) = sqrt((M_(B))/(M_(1))) , (50)/(150) xx (200)/(50) = sqrt((36)/(M_(A)))` `M_(A) = (36 xx 9)/(16) = 20.25`