GATE CY year:2019 PYQs & Answers — Page 3

Questions 21–30 of 65. Imported answers require independent review unless marked reviewed.

Topic practice 65 questionsPage 3 of 7

The major product formed in the following reaction is

Your answerChoose one option.

Diagram for Chemistry question 11 (figure 2)

Diagram for Chemistry question 11 (figure 3)

Diagram for Chemistry question 11 (figure 4)

Diagram for Chemistry question 11 (figure 5)

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In the following reaction, the stereochemistry of the major product is predicted by the

Your answerChoose one option.

Cram’s model

Cram’s chelation model

Felkin model

Felkin-Anh model

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The product(s) formed in the following reaction is (are)

Your answerChoose one option.

I only

II only

III only

mixture of I and II

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Among the following compounds, the number of compounds that DO NOT exhibit optical activity at room temperature is ________.

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The number of following diene(s) that undergo Diels-Alder reaction with methyl acrylate is ________.

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The number of ¹H NMR signals observed for the following compound is ______________.

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The number of CO stretching bands in IR spectrum of trigonal bipyramidal cis-M(CO)₃L₂ is ____________. (M = metal and L = monodentate ligand)

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On heating a sample of 25 mg hydrated compound (molecular weight = 250 g/mol) in thermogravimetric analysis, 16 mg of dehydrated compound remains. The number of water molecules lost per molecule of hydrated compound is ____________. (Molecular weight of water = 18 g/mol)

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The total number of α and β particles emitted in the following radioactive decay is ________. ²³⁸₉₂U → ²¹⁰₈₂Pb

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An ideal gas occupies an unknown volume V liters (L) at a pressure of 12 atm. The gas is expanded isothermally against a constant external pressure of 2 atm so that its final volume becomes 3 L. The work involved for this expansion process is ________ cal. (Round off to two decimal places) (Gas constant R = 0.082 L atm mol⁻¹ K⁻¹ = 2 cal mol⁻¹ K⁻¹)

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GATE CY year:2019 PYQs

Question 11

Question 12

Question 13

Question 14

Question 15

Question 16

Question 17

Question 18

Question 19

Question 20