GATE CY 2021 Paper 1 — page 15

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2021 Paper 1

Complete GATE CY 2021 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 43–45 of 65. Imported answers require review unless explicitly marked reviewed.

Paper practice 65 questionsPage 15 of 22

In the following reaction sequence [indanyl methyl ether treated with (i) sec-BuLi, THF; (ii) ZnCl₂ to give P; then 2-bromopyridine, Pd(PPh₃)₄, THF to give Q], the major products P and Q, respectively, are:

Your answerChoose one option.

Diagram for Chemistry question 33 (figure 2)

Diagram for Chemistry question 33 (figure 3)

Diagram for Chemistry question 33 (figure 4)

Diagram for Chemistry question 33 (figure 5)

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In an electrochemical cell, Ag⁺ ions in AgNO₃ are reduced to Ag metal at the cathode and Cu is oxidized to Cu²⁺ at the anode. A current of 0.7 A is passed through the cell for 10 min. The mass (in grams) of silver deposited and copper dissolved, respectively, are: [Faraday Constant = 96,485 C mol⁻¹, Atomic Weight of Ag = 107.9, Atomic Weight of Cu = 63.55]

Your answerChoose one option.

0.469 and 0.138

0.235 and 0.138

0.469 and 0.069

0.235 and 0.069

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Among the following

the compounds which can be prepared by nucleophilic substitution reaction are:

Your answerChoose one option.

III, IV, and V

I, II, and VI

II, IV, and VI

I, III, and V

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2021 · Paper 1

Question 33

Question 34

Question 35