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Statement: 500 mg of an isotope becomes...

Statement: `500 mg` of an isotope becomes `250mg` in `120` minute. Therefore `100mg` of the isotpe will becomes `50mg` in 24 minute.
Explanation: The process fo radioactive decay follows first order kinetics.

A

`S` is correct but `E` is wrong.

B

`S` is wrong but `E` is correct.

C

Both `S` and `E` are correct and `E` is correct explanation of `S`.

D

Both `S` and `E` are correct but `E` is not correct explanation of `S`.

Text Solution

Verified by Experts

The correct Answer is:
`b`

Assertion is wrong. Half-life period of a `1^(st)` order reaction does not depend on the concentration of reactants.
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