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JEE Main 26-Aug-2021 Shift 2 Solved Paper

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Question : 43

Total: 90

Given below are two statements.
One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) Heavy water is used for the study of reaction mechanism.
Reason (R) The rate of reaction for the cleavage of O-H bond is slower than that of O-D bond.
Choose the most appropriate answer from the options given below.

[26 Aug 2021 Shift 2]

Both (A) and (R) are true but (R) is not the correnct explanation of (A).
Both (A) and (R) are true and (R) is the correct explanation of (A).
(A) is false but (R) is true.
(A) is true but (R) is false.

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