GATE CY topic:chemistry PYQs & Answers — Page 3

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Questions 21–30 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 3 of 65

The reagent(s) that will effect the following transformation is(are) CH₃CH₂CH₂CH₂OMEM → CH₃CH₂CH₂CH₂OH MEM = methoxyethoxymethyl

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Pd/C, H₂

ZnBr₂

Pyridinium p-toluenesulfonate (PPTS), tBuOH

nBu₄NF

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The reaction(s) that give(s) meso-1,2-diphenylethane-1,2-diol as the major product is(are)

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Diagram for Chemistry question 22 (figure 2)

Diagram for Chemistry question 22 (figure 3)

Diagram for Chemistry question 22 (figure 4)

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In the ¹H NMR spectrum of compound X, the coupling constant (Jₐᵦ) between Hₐ and Hᵦ is 3 Hz. The amino alcohol(s) that give(s) X on reaction with methyl iodide followed by heating is(are)

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Diagram for Chemistry question 23 (figure 2)

Diagram for Chemistry question 23 (figure 3)

Diagram for Chemistry question 23 (figure 4)

Diagram for Chemistry question 23 (figure 5)

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The correct statement(s) regarding plastocyanin is(are)

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It is an electron transfer protein

It is intensely colored in its oxidised form

Its central metal ion has a distorted tetrahedral geometry

It contains S²⁻ bridged metal cluster

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The correct statement(s) about Mössbauer spectroscopy of iron compounds is(are)

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⁵⁷Co is used as a source

Their Mössbauer spectra are obtained using γ-ray with resonance energy of 14.4 keV

K₂[Fe(CN)₅NO] shows large quadrupole splitting

Isomer shift of FeSO₄·7H₂O is smaller than that of K₃[Fe(CN)₆]

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The interconversion of oxidation states of metal(s) observed in Wacker process is(are)

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Pd(II) / Pd(0)

Cu(II) / Cu(I)

Pd(IV) / Pd(II)

Cu(II) / Cu(0)

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For the wavefunction

, where

is a constant, the correct statement(s) is(are)

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It represents a stationary state

It is an odd function

It represents the wavefunction of a particle moving on a circular ring of radius

It is an eigen function of the momentum operator

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The correct statement(s) about spherical harmonics (

) is(are)

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All spherical harmonics are complex functions

They are eigen functions of

The spherical harmonics

and

are degenerate

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The difference in the number of gauche interactions present in diaxial and diequatorial chair conformations of trans-1,2-dimethylcyclohexane is _____ (in integer).

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The total number of symmetry operations (order, h) present in the point group of [PdCl₆]²⁻ is x and that in trans-[PdBr₂Cl₄]²⁻ is y. The value of x − y is _____ (in integer).

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GATE CY topic:chemistry PYQs

Question 21

Question 22

Question 23

Question 24

Question 25

Question 26

Question 27

Question 28

Question 29

Question 30