MCQOPTIONS
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| 1. |
The half life period of a radioactive element is 140 days. After 560 days, one gram of the element will reduce to? |
| A. | 1/16 g |
| B. | 1/8 g |
| C. | ¼ g |
| D. | ½ g |
| Answer» B. 1/8 g | |