GATE XE discipline:engineering-sciences PYQs & Answers — Page 95

Questions 941–950 of 1772. Imported answers require independent review unless marked reviewed.

Condition to be satisfied for

and

phases to be in equilibrium in a two-component (A and B) system at constant temperature and pressure is (Given:

is the chemical potential)

Your answerChoose one option.

entropy of the system should be maximum

Gibbs energy of the system should be minimum and

Helmholtz energy should be minimum

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Amino acids react to form peptides and proteins. This process is known as

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addition polymerization

nucleophilic substitution

condensation polymerization

hydration

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The most favoured slip system in face centered cubic metal is

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The dielectric constant of a material at ultraviolet frequencies is mainly due to

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dipolar polarizability

ionic polarizability

electronic polarizability

interfacial polarizability

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Match the different transformations/reactions in Column I with the most suitable information in Column II.

Column I (P) Eutectoid reaction (Q) Martensitic transformation (R) Precipitation reaction

Column II (1) involves no diffusion (2) one solid phase transforms into two solid phases (3) occurs in supersaturated solutions

Your answerChoose one option.

P-2; Q-3; R-1

P-1; Q-2; R-3

P-2; Q-1; R-3

P-3; Q-2; R-1

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In scanning electron microscopy, the resolution of backscattered electron (BSE) image is poorer compared to that of secondary electron (SE) image, because

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energy of BSE is lower

sampling volume of BSE is larger

yield of BSE is lower

sampling volume of SE is larger

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Which of the following deposition conditions favor the formation of larger grains in thin film?

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Low deposition rate and low substrate temperature

Low deposition rate and high substrate temperature

High deposition rate and low substrate temperature

High deposition rate and high substrate temperature

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A metal has a melting point of 600 °C. By rapid cooling, liquid metal can be made to solidify either at 500 °C or 400 °C or 300 °C. Critical size of the solid nuclei is

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same for solidification at 400 °C and 500 °C

smaller for solidification at 400 °C as compared to solidification at 500 °C

larger for solidification at 400 °C as compared to solidification at 500 °C

the smallest for solidification at 300 °C

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A magnet of mass 50 g has a magnetic moment of 4.2 × 10⁻⁷ A m². The density of the magnet is 7.2 g cm⁻³. The intensity of magnetization in A m⁻¹ is ________ (round off to 3 decimal places)

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In the context of scanning electron microscopy, match the information in Column I with most appropriate information in Column II.

Column I (P) Secondary electrons (Q) Backscattered electrons (R) Characteristic X-rays (S) Diffracted backscattered electrons

Column II (1) Crystallographic orientation of grains (2) Failure analysis of fractured surfaces (3) Chemical composition analysis (4) Distinguishing chemically distinct phases

Your answerChoose one option.

P-3; Q-2; R-1; S-4

P-2; Q-4; R-3; S-1

P-1; Q-3; R-2; S-4

P-4; Q-2; R-1; S-3

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GATE XE discipline:engineering-sciences PYQs

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