Class 11

9. Redox reactions question bank (Chemistry)

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Q1.

(a) H₂O₂ + O₃ → H₂O + 2O₂  
(b) H₂O₂ + Ag₂O → 2Ag + H₂O + O₂  
Role of hydrogen peroxide in the above reactions is respectively –

(A)
Oxidizing in (a) and reducing in (b)
(B)
Reducing in (a) and oxidizing in (b)
(C)
Reducing in (a) and (b)
(D)
Oxidizing in (a) and (b)
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Q2.

The reaction of aqueous KMnOâ‚„ with Hâ‚‚Oâ‚‚ in acidic conditions gives:

(A)
Mn⁴⁺ and O₂
(B)
Mn²âº and Oâ‚‚
(C)
Mn²âº and O₃
(D)
Mn⁴⁺ and MnO₂
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