Given below are two statements: 

Assertion (A): The decomposition of hydrogen peroxide to form water and oxygen is an example of a disproportionation reaction.
Reason (R): The oxygen of peroxide is in –1 oxidation state and it is converted to zero oxidation state in O2
and –2 oxidation state in H2O.

1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.

Subtopic:  Redox Titration & Type of Redox |
 89%
From NCERT
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The oxidising agent and reducing agent in the given reaction are

5P4s+12H2Ol+12HO-aq
8PH3g+12HPO2-aq

1. Oxidising agent = P4; Reducing agent = P4

2. Oxidising agent = P4; Reducing agent = H2O

3. Oxidising agent = H2O; Reducing agent = P4

4. None of the above

Subtopic:  Redox Titration & Type of Redox |
 69%
From NCERT
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Given below are two statements: 

Assertion (A): In the reaction between potassium permanganate and potassium iodide, permanganate ions act as an oxidising agent.
Reason (R): The oxidation state of manganese changes from +2 to +7 during the reaction.

1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.

Subtopic:  Redox Titration & Type of Redox |
 64%
From NCERT
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