List of practice Questions

Select the correct sequence:
A. Zeroth law of thermodynamics
B. First law of thermodynamics
C. Second law of thermodynamics
D. Third law of thermodynamics
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How does the gas constant R is related to the universal gas constant \(\bar{R}\) and molecular mass M?

Choose the correct sequence of operations in the Carnot cycle.
A. Isothermal expansion of gas.
B. Isothermal compression of gas.
C. Adiabatic compression of gas.
D. Adiabatic expansion of gas.
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Match the LIST-I with LIST-II
\begin{tabular}{|l|l|} \hline LIST-I & LIST-II
\hline A. If heat is added to the system & I. \(Q<0\)
B. If heat is removed from the system & II. \(W>0\)
C. If work is done on the system & III. \(Q>0\)
D. If work is done by the system & IV. \(W<0\)
\hline \end{tabular}
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Which type of liquid crystal has its structure twisted about the helical axis lying perpendicular to the orientation of molecules?

The magnitude of the reciprocal lattice vector is related to interplaner spacing \(d_{hkl}\):

Inter-planer spacing for a (034) plane in a simple cubic, whose lattice constant is \(4.5 \times 10^{-10}\) m, is:

The reciprocal lattice for a body centered cubic crystal is:

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:

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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Diamond exhibits which type of structures:

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

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 number of distinct space groups possible in 3-dimensions is:

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

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

The surface defects are two-dimensional defects, which have:
A. Grain boundaries
B. Tilt boundaries
C. Twin boundaries
D. Stacking boundaries
Choose the correct answer from the options given below:

Vacancies of the crystal may arise due to:

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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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 steps involved in determining the Miller indices are:
A. Take the reciprocal of these intercepts.
B. Simplify the fraction.
C. Enclose the obtained numbers into parentheses.
D. Find the intercepts of the plane on the crystallographic axes.
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Which of the following statements are correct:
A. In SC structure a = 2r
B. In SC structure a = r/2
C. In BCC structure a = \( 4r/\sqrt{3} \)
D. In FCC structure a = \( 2\sqrt{2} r \)
Where a is a lattice parameter and r is the atomic radius.

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.
Choose the correct answer from the options given below: