Two isotopes `P` and `Q` atomic weight `10` and `20`, respectively are mixed in equal amount by weight. After `20` days their weight ratio is found to be `1:4`. Isotope `P` has a half-life of `10` days. The half-life of isotope `Q` isA. ZeroB. 5 dayC. 20 dayD. Infinite

Two isotopes `P` and `Q` atomic weight `10` and `20`, respectively are

1.	Two isotopes `P` and `Q` atomic weight `10` and `20`, respectively are mixed in equal amount by weight. After `20` days their weight ratio is found to be `1:4`. Isotope `P` has a half-life of `10` days. The half-life of isotope `Q` isA. ZeroB. 5 dayC. 20 dayD. Infinite
Answer» Correct Answer - c p=w q=w No. of `p=w/4` `q=4xxw/4`,`2""^(n)=w/w=2` `n=1,t=t""_(1//2)=20`

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Two isotopes `P` and `Q` atomic weight `10` and `20`, respectively are mixed in equal amount by weight. After `20` days their weight ratio is found to be `1:4`. Isotope `P` has a half-life of `10` days. The half-life of isotope `Q` isA. ZeroB. 5 dayC. 20 dayD. Infinite

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