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The reaction : A rarr B follows first o...

The reaction : `A rarr B ` follows first order kinetics . The time taken for 0.8 mol of A to produce 0.6 mol of B is 1 hour . What is the time taken for conversion of 0.9 mol of A to produce 0.675 mol of B ?

A

1 hour

B

`0.5 ` hour

C

`0.25` hour

D

2 hour

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The correct Answer is:
A
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