GATE CY exam:gate PYQs & Answers — Page 51

Questions 501–510 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 51 of 65

The major product formed in the following reaction is

(2 equiv. of the β-keto ester; HCHO; NaOEt, EtOH, Δ)

Your answerChoose one option.

Diagram for Chemistry question 36 (figure 2)

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Diagram for Chemistry question 36 (figure 4)

Diagram for Chemistry question 36 (figure 5)

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The major product formed in the following reaction is

(1. CH₃MgCl; 2. HCl)

Your answerChoose one option.

Diagram for Chemistry question 37 (figure 2)

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Diagram for Chemistry question 37 (figure 5)

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In the following reaction sequence, the products P and Q are:

Your answerChoose one option.

Diagram for Chemistry question 38 (figure 2)

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Diagram for Chemistry question 38 (figure 5)

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The major product formed in the following reaction is

(PCC = pyridinium chlorochromate)

Your answerChoose one option.

Diagram for Chemistry question 39 (figure 2)

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Diagram for Chemistry question 39 (figure 5)

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In the following reactions, the major products P and Q are

Your answerChoose one option.

Diagram for Chemistry question 40 (figure 2)

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In the following reaction sequence, the products P and Q are

Your answerChoose one option.

Diagram for Chemistry question 41 (figure 2)

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The major product formed in the following reaction is

Your answerChoose one option.

Diagram for Chemistry question 42 (figure 2)

Diagram for Chemistry question 42 (figure 3)

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The rate of the following redox reaction is slowest when X is

Your answerChoose one option.

H₂O

NH₃

Cl⁻

N₃⁻

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A complex is composed of one chromium ion, three bromides and six water molecules. Upon addition of excess AgNO₃, 1.0 g aqueous solution of the complex gave 0.94 g of AgBr. The molecular formula of the complex is

(Atomic weight: Cr = 52, Br = 80, Ag = 108, O = 16 and H = 1)

Your answerChoose one option.

[Cr(H₂O)₆]Br₃

[Cr(H₂O)₅Br]Br₂·H₂O

[Cr(H₂O)₄Br₂]Br·2H₂O

[Cr(H₂O)₃Br₃]·3H₂O

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The number of possible optically active isomer(s) for the following complex is ________.

[(en)₂Co(N₂)(H₂)Co(en)₂]⁴⁺

en = ethylenediamine

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GATE CY exam:gate PYQs

Question 36

Question 37

Question 38

Question 39

Question 40

Question 41

Question 42

Question 43

Question 44

Question 45