JEE Main 2020 (Online) 9th January Morning Slot | Redox Reactions Question 45 | Chemistry

JEE Main 2020 (Online) 9th January Morning Slot

MCQ (Single Correct Answer)

-1

The compound that cannot act both as oxidising and reducing agent is :

H₃PO₄

H₂SO₃

H₂O₂

HNO₂

JEE Main 2020 (Online) 7th January Evening Slot

MCQ (Single Correct Answer)

-1

The redox reaction among the following is :

reaction of H₂SO₄ with NaOH.

formation of ozone form atmosphere oxygen in the presence of sunlight.

combination of dinitrogen with dioxygen at 2000 K

reaction of [Co(H₂O)₆]Cl₃ With AgNO₃

JEE Main 2020 (Online) 7th January Morning Slot

MCQ (Single Correct Answer)

-1

Oxidation number of potassium in K₂O. K₂O₂ and KO₂ respectively is :

+1, +2 and + 4

+1, +1 and + 1

+2, +1 and $$ + {1 \over 2}$$

+1, +4, and +2

JEE Main 2019 (Online) 12th April Morning Slot

MCQ (Single Correct Answer)

-1

An example of a disproportionation reaction is :

2NaBr + Cl₂ $$ \to $$ 2NaCl + Br₂

2KMnO₄ $$ \to $$ 2KMnO₄ + MnO₂ + O₂ (3) (4)

2CuBr $$ \to $$ CuBr₂ + Cu

2MnO₄ + 10I^– + 16H⁺ $$ \to $$ 2Mn₂⁺ + 5I₂ + 8H₂O

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