GATE CY format:mcq PYQs & Answers — Page 25

Questions 241–250 of 394. Imported answers require independent review unless marked reviewed.

Topic practice 394 questionsPage 25 of 40

The activity of ‘m’ molal CuSO₄ solution can be expressed in terms of its mean activity coefficient (γ±) as:

Your answerChoose one option.

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The character table for a pyramidal AB₃ molecule of C₃ᵥ point group is given below:

C₃ᵥ | E | 2C₃ | 3σᵥ | A₁ | 1 | 1 | 1 | z | x² + y², z² A₂ | 1 | 1 | −1 | Rz | E | 2 | −1 | 0 | (x,y) (Rx,Ry) | (x²−y², xy) (xz, yz)

The reducible representation of pyramidal AB₃ is

C₃ᵥ | E | 2C₃ | 3σᵥ Γ | 12 | 0 | 2

The CORRECT option representing all the normal Raman active modes of pyramidal AB₃ is:

Your answerChoose one option.

A₁ + A₂ + 2E

3A₁ + A₂ + E

2A₁ + 2E

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Major product formed in the following reaction sequence is:

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Diagram for Chemistry question 26 (figure 2)

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Diagram for Chemistry question 26 (figure 4)

Diagram for Chemistry question 26 (figure 5)

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Major products P and Q, in the given reaction sequence, are:

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Diagram for Chemistry question 27 (figure 2)

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Diagram for Chemistry question 27 (figure 5)

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Major products P and Q formed in the reactions given below, are:

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Diagram for Chemistry question 28 (figure 2)

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Diagram for Chemistry question 28 (figure 4)

Diagram for Chemistry question 28 (figure 5)

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A compound with molecular formula C

showed a strong IR band at ~ 1720 cm

, a peak at m/z 122 in the mass spectrum and the following

H NMR signals: δ 8.1–8.0 (2H, m), 7.6–7.5 (1H, m), 7.5–7.3 (2H, m), 4.3 (2H, t), 1.8 (2H, sextet) and 1.0 (3H, t). The structure of the compound is:

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Diagram for Chemistry question 29 (figure 2)

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Major product formed in the following synthetic sequence is:

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Diagram for Chemistry question 30 (figure 2)

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The CORRECT statement with respect to the stereochemistry of α-hydroxy acids P and Q formed in the following reactions is:

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Both P and Q are formed with retention of configuration.

Both P and Q are formed with inversion of configuration.

P is formed with retention of configuration and Q with inversion of configuration.

P is formed with inversion of configuration and Q with retention of configuration.

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The rate of solvolysis of the given compounds is in the order:

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T > R > Q > S > P

Q > T > R > P > S

R > T > Q > S > P

T > Q > R > P > S

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In the following reaction sequence, the major products Q and R are:

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Diagram for Chemistry question 33 (figure 2)

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GATE CY format:mcq PYQs

Question 14

Question 15

Question 26

Question 27

Question 28

Question 29

Question 30

Question 31

Question 32

Question 33