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A to B and C to D are first order reac...

` A to B` and `C to D` are first order reactions. Ratio of `t_(99.9%) ` values is 4:1, then, ratio of rate constants `K_1` to `K_2` is

A

`4:1`

B

`2:1`

C

`1:1`

D

`1:4`

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The correct Answer is:
D
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