MCQOPTIONS
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| 1. |
Half-life of a radioactive element is 10 days. The time during which quantity remains 1/10 of initial mass will be [RPET 1997] |
| A. | 100 days |
| B. | 50 days |
| C. | 33 days |
| D. | 16 days |
| Answer» D. 16 days | |