The amount of a radioactive substance which has a decay rate of 3·7 × 10¹⁰…

PYQ UPPSC LT Grade (Assistant Teacher) 2025

1. A.

   1 mol (Mole)

2. B.

   1 rad (Radian)

3. C.

   1 Bq (Becquerel)

4. D.

   1 Ci (Curie)

Attempted by 5 students.