List of top Material Science and Technology Questions

The energies involved in the process of domain growth are:
A. Exchange energy
B. Anisotropic energy
C. Domain Wall energy
D. Magnetostrictive energy
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Which of the following relations are correct for the cubic crystal:
A. a = b \( \neq \) c
B. a = b = c
C. \( \alpha = \beta = \gamma = 90^\circ \)
D. \( \alpha \neq \beta = \gamma = 90^\circ \)
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Paramagnetic materials behaves as diamagnetic materials :

What is the effect of temperature on magnetic susceptibility of ferromagnetic materials?

Which of the following option is correct related to the application of elastic hysteresis?

Copper has FCC structure with a lattice constant 3.61 Å. The radius of the copper atom is:

Domain theory explains:

Antiferromagnetic materials have magnetic susceptibility in the range:

The potential energy of a system of two atoms is given by the expression \( U = -A/r^2 + B/r^{10} \). A stable molecule is formed with the release of 8.0 eV of energy, when the interatomic distance is 2.8 Å. The values of A and B are:

The correct statements about SC lattice are:
A. The number of atoms per unit cell is 1
B. Its packing factor is 0.52
C. Iron is an example of SC lattice
D. Its Coordination Number is 6
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Which of the following is true for hard magnetic materials:

Diamond exhibits which type of structures:

The coordination number and volume of unit cell of hexagonal closed packed structure are respectively:

Which type of liquid crystal has its structure twisted about the helical axis lying perpendicular to the orientation of molecules?

In Laue's technique of X-ray diffraction, a single crystal is held stationary and the beam of white radiation of wavelength \(\lambda\) is inclined at which condition with glancing angle (\(\theta\)):

The shortest wavelength, present in X-rays produced by an accelerating potential of 50kV, is:

The vector form of Bragg's law is used in the construction of:

Which statements are correct for edge dislocation?
A. An edge dislocation moves in the direction of the Burger vector.
B. An edge dislocation involves an extra row of atoms above the slip plane.
C. An edge of the atomic plane is formed internal of the crystal.
D. The Burger vector of an edge dislocation is parallel to the dislocation line.
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The surface defects are two-dimensional defects, which have:
A. Grain boundaries
B. Tilt boundaries
C. Twin boundaries
D. Stacking boundaries
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The breaking stress of a wire depends on:

Vacancies of the crystal may arise due to:

The value of specific heat at constant volume (\(C_V\)) for diatomic molecules is:

According to the Entropy hypothesis, which one of the following statements is correct:

Match the LIST-I with LIST-II

LIST-I (Basic Laws)	LIST-II (Properties)
A. First Law of Thermodynamics	I. Concept of temperature
B. Second Law of Thermodynamics	II. Concept of internal energy
C. Third Law of Thermodynamics	III. Concept of entropy
D. Zeroth Law of Thermodynamics	IV. Nernst Theorem

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Match the LIST-I with LIST-II

LIST-I (Thermal Process)	LIST-II (Statement)
A. Isothermal process	I. Which occurs at constant volume
B. Adiabatic Process	II. Which occurs at constant pressure
C. Isobaric Process	III. Which occurs at constant temperature
D. Isochoric process	IV. No heat transfer during the thermodynamic process

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