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JEE MAIN 2021
16-03-2021 S2
Question
The half-life of $\mathrm{Au}^{198}$ is 2.7 days. The activity of 1.50 mg of $\mathrm{Au}^{198}$ if its atomic weight is $198 \mathrm{~g} \mathrm{~mol}^{-1}$ is, $\left(\mathrm{N}_{\mathrm{A}}=6 \times 10^{23} / \mathrm{mol}\right)$
Select the correct option:
A
240 Ci
B
357 Ci
C
535 Ci
D
252 Ci
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
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