GATE MT year:2023 PYQs & Answers — Page 2

Questions 11–20 of 65. Imported answers require independent review unless marked reviewed.

Topic practice 65 questionsPage 2 of 7

At one atmosphere pressure, α-Fe transforms to γ-Fe above 912 °C. Density of γ-Fe is more than that of α-Fe. Choose the correct statement.

Your answerChoose one option.

Increasing the pressure above one atmosphere lower the α-Fe to γ-Fe transformation temperature.

Increasing the pressure above one atmosphere raises the α-Fe to γ-Fe transformation temperature.

Molar volume of γ-Fe is higher than the molar volume of α-Fe.

Pressure change will not have any effect on the α-Fe to γ-Fe transformation temperature.

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Formation of an ideal solution leads to

Your answerChoose one option.

increase in entropy

decrease in volume

increase in enthalpy

decrease in entropy

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Order (O) and degree (D) of the differential equation

are

Your answerChoose one option.

O = 2 and D = 1

O = 1 and D = 2

O = 6 and D = 1

O = 2 and D = 6

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At one atmosphere pressure, iron (Fe) and nickel (Ni) oxidize as

Identify the correct statement.

Given: Temperature,

is in Kelvin

Your answerChoose one option.

Fe can reduce NiO at all temperatures

Fe can reduce NiO only above 1000 K

Ni can reduce FeO at all temperatures

Ni can reduce FeO only above 1000 K

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For laminar fluid flow through a smooth circular tube, the relation between friction factor (f) and Reynolds number (Re) is

Your answerChoose one option.

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Among the following options, a process for liquid-liquid separation is

Your answerChoose one option.

Smelting

Roasting

Sintering

Calcination

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The most effective concentration step for sulfide ores is

Your answerChoose one option.

Froth flotation

Magnetic separation

Gravity separation

Electrostatic separation

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The gas distribution in a blast furnace is controlled by the shape of

Your answerChoose one option.

Cohesive zone

Deadman zone

Raceway zone

Chemical reserve zone

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Diamond has low

Your answerChoose one option.

electrical conductivity

modulus of elasticity

hardness

thermal conductivity

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For self-diffusion in polycrystalline copper with a lattice diffusion coefficient D_L, grain boundary diffusion coefficient D_GB, and surface diffusion coefficient D_S, the correct relationship is

Your answerChoose one option.

D_S > D_GB > D_L

D_L > D_S > D_GB

D_GB > D_S > D_L

D_GB = D_S = D_L

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GATE MT year:2023 PYQs

Question 11

Question 12

Question 13

Question 14

Question 15

Question 16

Question 17

Question 18

Question 19

Question 20