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Redox Reactions question

2019 · Q111
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Redox Reactions question

2019 · Q111

NEETChemistryRedox ReactionsMCQ+4 / −1
Which of the following reactions are disproportionation reaction?

(a) 2Cu+ →\to→ Cu2+ + Cu0
(b) 3MnO42+ + 4H+ →\to→ 2MnO4- + MnO2 + 2H2O
(c) 2KMnO4 →Δ\xrightarrow{\Delta}Δ​ K2MnO4 + MnO2 + O2
(d) 2MnO4- + 3Mn2+ + 2H2O →\to→ 5MnO2 + 4H⊕{H^ \oplus }H⊕

Select the correct option from the following :
  1. A
    (a), (c) and (d)
  2. B
    (a) and (b) only
  3. C
    (a) and (d) only
  4. D
    (a), (b) and (c)
View written solutionFree

Correct answer: B

In a disproportionation reaction, same substance undergoes oxidation (increase in oxidation number) and reduction (decrease in oxidation number forming two different products.

NEET 2019 Chemistry - Redox Reactions Question 10 English Explanation

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