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CBSE

Chemistry

NEET Chemistry : Redox Reactions

61.

The reaction that takes place when Cl₂ gas is passed through conc. NaOH solution is

62.

If Cl₂ is passed through hot aqueous NaOH, the products formed have Cl in different oxidation states. These are indicated as

63.

The oxidation number of carbon in CH₂O is:

64.

The brown complex obtained in the detection of nitrate radical is formulated as [Fe(H₂O)₅NO]SO₄. What is the oxidation number of Fe in this complex?

65.

When a manganous salt is fused with a mixture of KNO₃ and solid NaOH, the oxidation number of Mn changes from +2 to

66.

Which of the following reaction involves oxidation and reduction?

67.

The oxidation state of C in C₆H₁₂O₆ is

68.

Excess of KI reacts with CuSO₄ solution and then Na₂S₂O₃ solution is added to it. Which of the statements is incorrect for this reaction ?

69.

Which of the following reactions are disproportionation reaction?

(a) 2Cu⁺ → Cu²⁺ + Cu⁰

(b) 3MnO $_{4}^{2 -} + 4 H^{+} \to 2 {MnO}_{4}^{-} + {MnO}_{2} + 2 H_{2} O$

(d) 2MnO $_{4}^{-} + 3 {Mn}^{2 +} + 2 H_{2} O \to 5 {MnO}_{2} + 4 H^{\oplus}$

Select the correct option from the following

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