1.

For a first order reaction A rarr B, A is optically active and B is optically inactive, and following experimental data were observed : |{:("Time","0","60 min",oo),("Optical Rotation",82^(@),22^(@),2^(@)):}| If some impurity, find optical rotation after 2 hours :

Answer»

`7^(@)`
`12^(@)`
`22^(@)`
`42^(@)`

ANSWER :A


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