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JEE Main 2023 (Online) 24th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

In which of the following reactions the hydrogen peroxide acts as a reducing agent?

A

$$\mathrm{M{n^{2 + }} + {H_2}{O_2} \to M{n^{4 + }} + 2O{H^ - }}$$

B

$$\mathrm{HOCl + {H_2}{O_2} \to {H_3}{O^ + } + C{l^ - } + {O_2}}$$

C

$$\mathrm{PbS + 4{H_2}{O_2} \to PbS{O_4} + 4{H_2}O}$$

D

$$\mathrm{2F{e^{2 + }} + {H_2}{O_2} \to 2F{e^{3 + }} + 2O{H^ - }}$$

2

JEE Main 2023 (Online) 24th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Find out the major products from the following reactions.

JEE Main 2023 (Online) 24th January Evening Shift Chemistry - Hydrocarbons Question 29 English

A

JEE Main 2023 (Online) 24th January Evening Shift Chemistry - Hydrocarbons Question 29 English Option 1

B

JEE Main 2023 (Online) 24th January Evening Shift Chemistry - Hydrocarbons Question 29 English Option 2

C

JEE Main 2023 (Online) 24th January Evening Shift Chemistry - Hydrocarbons Question 29 English Option 3

D

JEE Main 2023 (Online) 24th January Evening Shift Chemistry - Hydrocarbons Question 29 English Option 4

3

JEE Main 2023 (Online) 24th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

The metal which is extracted by oxidation and subsequent reduction from its ore is :

A

Al

B

Cu

C

Ag

D

Fe

4

JEE Main 2023 (Online) 24th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

What is the number of unpaired electron(s) in the highest occupied molecular orbital of the following species : $$\mathrm{{N_2};N_2^ + ;{O_2};O_2^ + }$$ ?

A

0, 1, 0, 1

B

2, 1, 0, 1

C

0, 1, 2, 1

D

2, 1, 2, 1

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