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A gaseous substance A undergoes first or...

A gaseous substance A undergoes first order dissociation to give B ,C and D as shown .
`A(g) to 2B (g) + C(g) + D(g)`
If molar masses of A,B,C and D are 450 , 100 , 50 and 200 respectively and rate constant of disappearance of `A "is" 0.693 xx 10 ^(-3) sec^(-1),` then calculate ratio of rate of effusion initially and after 2000 seconds.
[Multiply the answer by `26sqrt(52)` and fill the value in the OMR.]

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