Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन
JEE Main & Advanced
Chemistry
Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन
Question Bank
Artificial Transmutation
question_answer
\[1.0\,gm\] radioactive sodium on decay becomes \[0.25\,gm\] in 16 hours. How much time \[48\,gm\] of same radioactive sodium will need to become \[3.0\,gm\]
A) 48 hours
B) 32 hours
C) 20 hours
D) 16 hours
Correct Answer:
B
Solution :
48 gm of radioactive sodium will need 32 hours to become 3.0 gm.