Chemistry · 2023
JEE Main · 1 February 2023, Shift 1 · Q57
A and B are two substances undergoing radioactive decay in a container. The half life of A is 15 min and that of B is 5 min. If the initial…
A and B are two substances undergoing radioactive decay in a container. The half life of A is $\displaystyle 15$ min and that of B is $\displaystyle 5$ min. If the initial concentration of B is $\displaystyle 4$ times that of A and they both start decaying at the same time, how much time will it take for the concentration of both of them to be same?
$\displaystyle \_\_\_\_$ min.
Official answer
From NTA’s final answer key for this paper.
15
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JEE Main 2023 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.