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Q.

X mL of H2 gas effuses through a hole in a container in 5 seconds. The time taken for the effusion of the same volume of the gas specified below under identical condition is:

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a

10 sec : He

b

20 sec : O2

c

25 sec : CO

d

55 sec : CO2

answer is B.

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Detailed Solution

r1r2=M2M1V1t1×t2V2=M2M1t2t1=M2M1⇒t25=M22From options, (2) is suitable.
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