GATE CY topic:chemical-sciences PYQs & Answers — Page 16

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topic:chemical-sciences

Questions 151–160 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 16 of 65

The complex(es) with distorted octahedral structure is (are)

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[VF₆]³⁻

[FeF₆]³⁻

[MnF₆]³⁻

[Fe(CN)₆]⁴⁻

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The compound(s) which show(s) the perovskite structure in solid state is (are)

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CaTiO

NiFe

CsPbI

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Among the following metalloproteins, the pair(s) of non-heme proteins is (are)

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Hemoglobin and Myoglobin

Hemocyanin and Carboxypeptidase

Hemerythrin and Carbonic anhydrase

Cytochrome P-450 and Hemocyanin

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The reaction(s) that yield(s) X as the major product is (are)

X: Ph–CH

–CH

–CO

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Diagram for Chemistry question 24 (figure 2)

Ph–CH

–C(=O)–CH

Br; NaOMe

Diagram for Chemistry question 24 (figure 3)

Ph–CH(Br)–C(=O)–CH

; NaOMe

Diagram for Chemistry question 24 (figure 4)

Ph–CH=CH–CO

Me; DIBAL-H (1.0 equiv.), −78 °C

Diagram for Chemistry question 24 (figure 5)

Ph–C≡C–CO

Me; H

, 5% Pd on CaCO

, quinoline

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The reaction(s) that yield(s) 2-methylquinoline as the major product is (are)

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o-Aminobenzaldehyde; Me-CHO, aqueous NaOH

Diagram for Chemistry question 25 (figure 2)

Aniline; 1. Me–CH=CH–CHO 2. p-TSA, reflux 3. DDQ

Diagram for Chemistry question 25 (figure 3)

2-Methyl-1H-indole; MeLi, CH

Diagram for Chemistry question 25 (figure 4)

1H-Indole-2,3-dione; 1. NaOH 2. MeCOMe 3. H

, heat

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The correct statement(s) for decalin is (are)

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cis-Decalin is thermodynamically less stable than trans-decalin.

cis-Decalin contains plane of symmetry.

trans-Decalin undergoes ring inversion.

trans-Decalin belongs to the point group of C

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The correct statement(s) about

state of an atom is (are):

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it corresponds to

, and

it can originate from

electronic configuration.

it splits into five levels in the presence of magnetic field.

it can show spectral transition to

state.

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The correct statement(s) related to an ensemble is (are):

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an ensemble is a collection of an infinite number of imaginary replications of the system of interest.

all members of an ensemble are macroscopically identical and also have identical microstates.

an ensemble average of any macroscopic property of the system is equal to the value of the property averaged over a sufficiently long time.

all systems in a canonical ensemble need NOT have the same composition.

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The non-dissociative adsorption of a gas on a given surface at a fixed temperature follows Langmuir isotherm. The plot(s) which give(s) a straight line is (are) [Given:

= volume of the adsorbed gas,

= pressure of the gas]

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versus

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The crystal field stabilization energy of

with

value of 21600 cm

. The value of

is ___. (rounded off to the nearest integer)

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GATE CY topic:chemical-sciences PYQs

Question 21

Question 22

Question 23

Question 24

Question 25

Question 26

Question 27

Question 28

Question 29

Question 30