1.

A certain nuclide has a half-life of 25 minutes. If one starts with 100 g of it, how much of it will remain at the end of 100 minutes                                               [DPMT 1982]

A.                 1.0 g     
B.                 4.0 g
C.                 6.25 g   
D.                 12.50 g
Answer» D.                 12.50 g


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