GATE CY branch:cy PYQs & Answers — Page 41

Questions 401–410 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 41 of 65

Among the following, the suitable reagents for the given transformation is:

Your answerChoose one option.

H₂, Pd / C

H₂N–NH₂ / KOH, Δ

NaBH₄ / CeCl₃·7H₂O

Li / Liq. NH₃

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Major product formed in the following reaction sequence is:

Your answerChoose one option.

Diagram for Chemistry question 2 (figure 2)

Diagram for Chemistry question 2 (figure 3)

Diagram for Chemistry question 2 (figure 4)

Diagram for Chemistry question 2 (figure 5)

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Major product formed in the following reaction is:

Your answerChoose one option.

Diagram for Chemistry question 3 (figure 2)

Diagram for Chemistry question 3 (figure 3)

Diagram for Chemistry question 3 (figure 4)

Diagram for Chemistry question 3 (figure 5)

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Major product formed in the following transformation is:

Your answerChoose one option.

Diagram for Chemistry question 4 (figure 2)

Diagram for Chemistry question 4 (figure 3)

Diagram for Chemistry question 4 (figure 4)

Diagram for Chemistry question 4 (figure 5)

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Absolute stereochemistry of the given compound is:

Your answerChoose one option.

4aR, 8aS

4aR, 8aR

4aS, 8aS

4aS, 8aR

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In the following reaction sequence,

the major products P and Q are:

Your answerChoose one option.

Diagram for Chemistry question 6 (figure 2)

Diagram for Chemistry question 6 (figure 3)

Diagram for Chemistry question 6 (figure 4)

Diagram for Chemistry question 6 (figure 5)

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Major product formed in the given reaction is:

-D-glucose

Your answerChoose one option.

Diagram for Chemistry question 7 (figure 2)

Diagram for Chemistry question 7 (figure 3)

Diagram for Chemistry question 7 (figure 4)

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The CORRECT statement regarding the substitution of coordinated ligands in Ni(CO)₄ and Co(NO)(CO)₃ is:

(Given: Co–N–O bond is nearly linear; atomic numbers of Co and Ni are 27 and 28, respectively)

Your answerChoose one option.

Ni(CO)₄ and Co(NO)(CO)₃ follow associative and dissociative pathways, respectively.

Ni(CO)₄ and Co(NO)(CO)₃ follow dissociative and associative pathways, respectively.

Both Ni(CO)₄ and Co(NO)(CO)₃ follow associative pathway.

Both Ni(CO)₄ and Co(NO)(CO)₃ follow dissociative pathway.

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The CORRECT statement about hexagonal boron nitride is:

Your answerChoose one option.

It is a good electrical conductor.

It has same layer stacking as that of graphite.

It is reactive towards fluorine.

It has lower thermal stability in air compared to that of graphite.

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In oxyhemocyanin, the coordination number, mode of oxygen binding, color and the net magnetic behavior of copper ions, respectively are:

(Given: atomic number of Cu is 29)

Your answerChoose one option.

Four,

-O₂²⁻, colorless and paramagnetic.

Five,

-O₂²⁻, colorless and paramagnetic.

Five,

-O₂²⁻, blue and diamagnetic.

Four,

-O₂²⁻, blue and diamagnetic.

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GATE CY branch:cy PYQs

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Question 7

Question 8

Question 9

Question 10