1.

Consider the following decay series: A to B to C to D Where, A,B and C are radioactive elements with half lives of 4,5 sec, 15 days and 1 sec respectively and D is non-radioactive element, Starting with 1 mole of A, the numbe of moles B,C andleft after 30 days are:

Answer»

One mole of D and none of A, B or C
3/4 mole of B, 1/4 mole of D and none of A or C
1/4 MOL of B, 3/4 mol of D and none of A or C
1/2 MOE of B, 1/4 mol of C, 1/4 mol of D and noen of A

Answer :d


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