If 4 gm of a radioisotope has a half-life period of 10 days, the half – McqOptions

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1.	If 4 gm of a radioisotope has a half-life period of 10 days, the half-life of 2 gm of the same istotope will be __________ days.
A.	10
B.	5
C.	20
D.	30
Answer» B. 5

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