AIPMT PRELIMS2000Chemistry-Radioactivity
AIPMT PRELIMS 2000 Chemistry Half-life MCQ Question
Type: MCQ-numerical-Medium-Class 12
A 300 gram radioactive sample has half life of 3 hours. After 18 hour's remaining quantity will be :
A
4.68 gram
B
2.34 gram
C
3.34 gram
D
9.37 gram
Correct Answer
Option A
Detailed Explanation
After 18 hours, which is 6 half-lives (18/3), the remaining quantity is 300/(2⁶) = 4.68 grams.
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