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Karnataka Board PUCPUC Science Class 11

Assertion (A): The decomposition of hydrogen peroxide to form water and oxygen is an example of disproportionation reaction. Reason (R): The oxygen of peroxide is in –1 oxidation state and

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Question

Assertion (A): The decomposition of hydrogen peroxide to form water and oxygen is an example of disproportionation reaction.

Reason (R): The oxygen of peroxide is in –1 oxidation state and it is converted to zero oxidation state in \[\ce{O2}\] and –2 oxidation state in \[\ce{H2O}\].

Options

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

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

  • A is true but R is false.

  • Both A and R are false.

MCQ
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Solution

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

Explanation:

Here the oxygen of peroxide, which is present in –1 state, is converted to zero oxidation state in \[\ce{O2}\] undergoing oxidation and decreases to –2 oxidation state in \[\ce{H2O}\] undergoing reduction.

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Chapter 8: Redox Reactions - Multiple Choice Questions (Type - I) [Page 110]

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NCERT Exemplar Chemistry Exemplar [English] Class 11
Chapter 8 Redox Reactions
Multiple Choice Questions (Type - I) | Q 31 | Page 110

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