GATE CY format:mcq PYQs & Answers — Page 22

Questions 211–220 of 394. Imported answers require independent review unless marked reviewed.

Topic practice 394 questionsPage 22 of 40

In the following reaction

the major products X and Y, respectively, are:

Your answerChoose one option.

Diagram for Chemistry question 36 (figure 2)

Diagram for Chemistry question 36 (figure 3)

Diagram for Chemistry question 36 (figure 4)

Diagram for Chemistry question 36 (figure 5)

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The major products P and Q formed in the following reactions [two reaction schemes shown], respectively, are:

Your answerChoose one option.

Diagram for Chemistry question 37 (figure 2)

Diagram for Chemistry question 37 (figure 3)

Diagram for Chemistry question 37 (figure 4)

Diagram for Chemistry question 37 (figure 5)

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The major product formed in the reaction of (2R,3R)-2-bromo-3-methylpentane with NaOMe is:

Your answerChoose one option.

(Z)-3-methylpent-2-ene

(E)-3-methylpent-2-ene

(2R,3R)-2-methoxy-3-methylpentane

(2S,3R)-2-methoxy-3-methylpentane

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The major product formed in the following reaction [substrate shown; (i) LDA (1.1 equiv), (ii) PhCH₂Br (1.1 equiv), (iii) LiAlH₄ (3 equiv)] is:

Your answerChoose one option.

Diagram for Chemistry question 39 (figure 2)

Diagram for Chemistry question 39 (figure 3)

Diagram for Chemistry question 39 (figure 4)

Diagram for Chemistry question 39 (figure 5)

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Hexane and heptane are completely miscible. At 25 °C, the vapor pressures of hexane and heptane are 0.198 atm and 0.06 atm, respectively. The mole fractions of hexane and heptane in the vapor phase for a solution containing 4 M hexane and 6 M heptane, respectively, are:

Your answerChoose one option.

0.688 and 0.312

0.400 and 0.600

0.312 and 0.688

0.600 and 0.400

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The correct order of Lewis acid strengths of BF₂Cl, BFClBr, BF₂Br and BBr₂ is:

Your answerChoose one option.

BF₂Cl > BFClBr > BF₂Br > BBr₂

BBr₂ > BFClBr > BF₂Br > BF₂Cl

BF₂Cl > BF₂Br > BFClBr > BBr₂

BFClBr > BBr₂ > BF₂Cl > BF₂Br

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The correct order of increasing intensity (molar absorptivity) of the UV-visible absorption bands for the ions [Ti(H₂O)₆]³⁺, [Mn(H₂O)₆]²⁺, [CrO₄]²⁻, and [NiCl₄]²⁻ is:

Your answerChoose one option.

[Ti(H₂O)₆]³⁺ < [Mn(H₂O)₆]²⁺ < [CrO₄]²⁻ < [NiCl₄]²⁻

[Mn(H₂O)₆]²⁺ < [Ti(H₂O)₆]³⁺ < [NiCl₄]²⁻ < [CrO₄]²⁻

[NiCl₄]²⁻ < [Ti(H₂O)₆]³⁺ < [Mn(H₂O)₆]²⁺ < [CrO₄]²⁻

[Ti(H₂O)₆]³⁺ < [NiCl₄]²⁻ < [CrO₄]²⁻ < [Mn(H₂O)₆]²⁺

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While I agree_____his proposal this time, I do not often agree_____him.

Your answerChoose one option.

to, with

with, to

with, with

to, to

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The recent measures to improve the output would_____the level of production to our satisfaction.

Your answerChoose one option.

increase

decrease

speed

equalise

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Select the word that fits the analogy:

White: Whitening :: Light: _____

Your answerChoose one option.

Lightning

Lightening

Lighting

Enlightening

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GATE CY format:mcq PYQs

Question 36

Question 37

Question 38

Question 39

Question 40

Question 41

Question 42

Question 1

Question 2

Question 3