Engineering Sciences
GATE XE Characterization and Measurements of Properties PYQs
Build your understanding with focused practice from past exam papers.
Questions 11–20 of 23. Imported answers require independent review unless marked reviewed.
Question 48
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A differential scanning calorimetry (DSC) experiment tracks the heat flow into or out of a system as a function of temperature. If the experiments given in the options below are performed at 1 atmospheric pressure, then in which case will the DSC thermogram exhibit a spike, either upward or downward?
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 65
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The third peak in the X-ray diffraction pattern of a face-centered cubic crystal is at 2θ value of 45°, where 2θ is the angle between the incident and reflected rays. The wavelength of the monochromatic X-ray beam is 1.54 Å. Considering first-order reflection, the lattice parameter of the crystal is ________ Å. (Round off to two decimal places)
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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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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 10
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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
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 13
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X-ray diffraction peak broadening enables the estimation of
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 18
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Vickers hardness test is performed with an indenter of square-base diamond pyramid having an included angle of 136° between the opposite faces of the pyramid. If the applied load is 10 kg and the average length of diagonals of square indentation is 0.5 mm, the Vickers hardness in kg mm
is ________ (round off to nearest integer)Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 1
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A Pb-Sn sample of eutectic composition, containing α- and β- phases, is examined in a scanning electron microscope. The α-phase contains ~97 wt% Pb (atomic number 82) while β-phase contains ~99 wt% Sn (atomic number 50). The ratio of number of backscattered electrons escaping from α-phase to that from β-phase would be:
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 2
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Smallest or minimum feature size that can be theoretically resolved in an optical microscope does NOT depend on:
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 1
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On decreasing the objective aperture size in an optical microscope
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 15
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A sintered sample was weighed in air and water using an analytical balance. The mass of the sample in air is 2.67 g and its apparent mass in water is 1.67 g. The density of the sample is __________ g cm⁻³ (give answer up to 2 decimal places)
(Given: Density of water = 1.00 g cm⁻³)
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