GATE CY topic:chemistry PYQs & Answers — Page 15

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Questions 141–150 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 15 of 65

Among the following, the compound with the lowest CO stretching frequency is

Your answerChoose one option.

[Mn(CO)₆]⁺

[V(CO)₆]⁻

[Cr(CO)₅]

[Cr(dien)(CO)₃] (dien: diethylenetriamine)

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The ground state of [Cr(H₂O)₆]²⁺ is

Your answerChoose one option.

⁵E_g

⁵T₂g

⁶A₁g

⁶A₂g

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The reaction of XeF₂ with HN(SO₂F)₂ at 273 K in CF₂Cl₂ solvent yields

Your answerChoose one option.

XeF₄ + SO₂ + NH₃

Xe + SO₂ + N₂ + HF

SOF₂ + XeO₂ + NH₃

FXeN(SO₂F)₂ + HF

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The major product in the following reaction sequence is

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Diagram for Chemistry question 14 (figure 2)

Diagram for Chemistry question 14 (figure 3)

Diagram for Chemistry question 14 (figure 4)

Diagram for Chemistry question 14 (figure 5)

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Among the following, the chiral compound is

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The major product in the given reaction sequence is Q. The mass spectrum of Q shows ([M] = molecular ion peak)

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[M], [M+2], [M+4], and [M+6] peaks with relative intensity of 1:1:1:1

[M], [M+2], [M+4], and [M+6] peaks with relative intensity of 1:3:3:1

[M], [M+2], and [M+4] peaks with relative intensity of 1:2:1

[M] and [M+2] peaks with relative intensity of 1:1

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The product M in the following reaction is

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Structure shown in figure.

Diagram for Chemistry question 17 (figure 2)

Structure shown in figure.

Diagram for Chemistry question 17 (figure 3)

Structure shown in figure.

Diagram for Chemistry question 17 (figure 4)

Structure shown in figure.

Diagram for Chemistry question 17 (figure 5)

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Critical micellar concentration of a surfactant is 0.008 M in water at 25 °C. If the aggregation number of the micelles is 80, the concentration of the micelles (in M) present in 0.088 M aqueous solution of the surfactant at 25 °C is

Your answerChoose one option.

0.010

0.001

0.008

0.088

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The order and the number of classes present in a group with the irreducible representations A₁, A₂, B₁, B₂, E₁, and E₂, are, respectively,

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6 and 6

12 and 6

6 and 3

12 and 3

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The molecule XY₂ is microwave active and its vibration-rotation spectrum shows only P and R transitions. In the correct structure,

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X is the central atom in linear XY₂.

X is the central atom in bent XY₂.

Y is the central atom in linear XY₂.

Y is the central atom in bent XY₂.

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GATE CY topic:chemistry PYQs

Question 11

Question 12

Question 13

Question 14

Question 15

Question 16

Question 17

Question 18

Question 19

Question 20