AIPMT 2014 | Redox Reactions Question 11 | Chemistry

AIPMT 2014

MCQ (Single Correct Answer)

-1

(I) H₂O₂ + O₃ $$ \to $$ H₂O + 2O₂
(II) H₂O₂ + Ag₂O $$ \to $$ 2Ag + H₂O + O₂
Role of Hydrogen peroxide in the above reactions is respectvely

oxidizing in (I) and reducing in (II)

reducing in (I) and oxidizing (II)

reducing in (I) and (II)

oxidizing in (I) and (II)

AIPMT 2014

MCQ (Single Correct Answer)

-1

In acidic medium, H₂O₂ changes Cr₂O₇^2- to CrO₅ which has two

($$-$$O$$-$$O$$-$$) bonds. Oxidation state of Cr in CrO₅ is

$$-$$10

AIPMT 2012 Prelims

MCQ (Single Correct Answer)

-1

When Cl₂ gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from

zero to +1 and zero to $$-$$5

zero to $$-$$1 and zero to +5

zero to $$-$$1 and zero to +3

zero to +1 and zero to $$-$$3

AIPMT 2012 Prelims

MCQ (Single Correct Answer)

-1

A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation number?

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