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05/10/2020 12:02 pm
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X ml of H2 gas effuse through a hole in a container in 5 seconds. The time taken for the effusion of the same volme of the gas specified below under identical conditions is
(a) 10 seconds : He
(b) 20 seconds : O2
(c) 25 seconds : CO
(d) 55 seconds : CO2
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05/10/2020 12:06 pm
(b) 20 seconds : O2
Explanation:
For effusion of same volume,
t1/t2 = M1/M2 => t1/√M1 = t2/√M2
This is clearly seen from the options that the ratio of t/√M is same for H2 and O2.
(5/√2 = 30/√32 = 5/√2)