GATE CY format:nat PYQs & Answers — Page 4

Questions 31–40 of 166. Imported answers require independent review unless marked reviewed.

Topic practice 166 questionsPage 4 of 17

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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The number of metal-metal bond(s) in the complex

and in

. The value of

is ___. (Assume 18 electron rule is followed.) (Answer in integer)

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H NMR spectrum of a mixture containing CH

Br (

mol) and (CH

)

CBr (

mol) shows two singlets at 2.7 ppm and 1.8 ppm, with the relative ratio of 3:1 (integration value), respectively. The value of

is ____. (rounded off to the nearest integer)

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The value of

in atomic unit of energy is _____. (

: charge of electron;

: Bohr radius;

: permittivity of vacuum) (rounded off to the nearest integer)

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The partial vapor pressure of 0.1 mol solution of B in liquid A is 60 kPa at 300 K. The partial vapor pressure (in kPa) of a solution containing B with mole fraction of 0.1 in liquid A at 300 K is ____. (Assume the solute B obeys Henry’s law. The molar mass of A is 80 g mol

.) (rounded off to three decimal places)

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Consider the following two parallel irreversible first-order reactions, where

at 300 K. After complete conversion of R at 300 K, the concentration of P1 in the reaction mixture was 15 mol L

. The initial concentration of R (in mol L

) was ____.

(

and

are the rate constants) (rounded off to one decimal place)

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ΔS° (in J mol⁻¹ K⁻¹) for the given reaction at 298 K is ______.

[Cu(H₂O)₆]²⁺ + en → [Cu(H₂O)₄(en)]²⁺ + 2H₂O

(Given: log K₁ = 10.6, where K₁ is the equilibrium constant, ΔH° = −54 kJ mol⁻¹ and R = 8.314 J mol⁻¹ K⁻¹)

(rounded off to two decimal places)

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The turnover frequency (in h⁻¹) of a reaction where 5 mol% of a catalyst is required for 90% conversion in 3 h is ____.

(rounded off to the nearest integer)

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In thermogravimetric analysis, 12.45 mg of CuSO₄·5H₂O was subjected to heating under N₂ atmosphere. At a particular temperature, there was a weight loss of 3.6 mg. The number of water molecule(s) lost per formula unit is ____.

(Given molar mass (in g mol⁻¹) of H = 1.0, O = 16.0, S = 32.0, and Cu = 63.5)

(rounded off to the nearest integer)

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In the given reaction sequence, the amount of R produced (in g) is ____.

Benzene (7.8 g)

(Given: molar mass (in g mol⁻¹) of H = 1, C = 12, N = 14, O = 16, and S = 32)

(rounded off to two decimal places)

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GATE CY format:nat PYQs

Question 30

Question 31

Question 32

Question 33

Question 34

Question 35

Question 58

Question 59

Question 60

Question 61