Chemistry-Oxidation Number
NEET Chemistry Oxidation Number Assertion Reason Question
Type: Assertion Reason-assertion-Hard-Class 11
Assertion (A): In the reaction of potassium dichromate(VI) with sodium sulphite in an acid solution, the oxidation number of chromium changes from +6 to +3. | Reason (R): The change in oxidation number indicates a redox process, where chromium is reduced.
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.
Correct Answer
Option A
Detailed Explanation
The oxidation number of chromium changes from +6 to +3, indicating reduction. The reason correctly explains the assertion by identifying the redox process.
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