Chemistry-Oxidation Number

NEET Chemistry Oxidation Number Assertion Reason Question

Type: Assertion Reason-assertion-Medium-Class 11

Assertion (A): In the reaction CH4 + 4Cl2 → CCl4 + 4HCl, the oxidation number of carbon changes from -4 to +4. | Reason (R): Oxidation numbers are assigned based on electron transfer assumptions for bookkeeping purposes.

A

Both A and R are true, and R is the correct explanation of A.

B

Both A and R are true, but R is not the correct explanation of A.

C

A is true but R is false.

D

A is false but R is true.

Correct Answer

Option A

Detailed Explanation

The oxidation number of carbon in CH4 is -4 and in CCl4 is +4, indicating a change. The reason provided explains that oxidation numbers are a bookkeeping tool based on assumed electron transfers.

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