List of top Material Science and Technology Questions asked in CUET (PG)

Which of the following are applications of nanomaterials?
A. Catalysts,
B. Polarizer,
C. Coatings for anticorrosion protection,
D. Fluorescent, E. Drug delivery.
Arrange the following types of materials in decreasing order of Fermi energy level from valence band:
A. \(p\)-type semiconductor,
B. \(n\)-type semiconductor,
C. Intrinsic semiconductor,
D. \(n\)-type degenerate semiconductor.
Arrange the following elements with different atomic weight and same density according to decreasing number of atoms per unit volume:
A. Atomic weight \(=10\),
B. Atomic weight \(=20\),
C. Atomic weight \(=30\),
D. Atomic weight \(=40\).
Arrange the following dispersion graphs in decreasing order of their corresponding effective electron mass.
Arrange the following in decreasing order:
A. Net magnetization in ferromagnets,
B. Net magnetization in ferrimagnets,
C. Net magnetization in anti-ferromagnets,
D. Net magnetization in paramagnets.
Arrange the following steps of sol-gel method in correct order:
A. Gelation,
B. Hydrolysis,
C. Sintering,
D. Drying.
Arrange the following options in decreasing order:
A. The activation energy for lattice diffusion is \(Q_l\),
B. The activation energy for dislocation core is \(Q_d\),
C. The activation energy for grain boundaries is \(Q_g\),
D. The activation energy for surface is \(Q_s\).
Arrange the following according to increasing order of their dimensionality:
A. Quantum well,
B. Quantum wire,
C. Bulk material,
D. Quantum dot.
Given below are two statements:
Assertion (A): The conductivity of metals decreases with increase in temperature.
Reason (R): More phonons excitation take place at higher temperature.
Arrange the following in increasing order of their magnetic susceptibility:
A. Diamagnetic material,
B. Paramagnetic material,
C. Ferromagnetic material.
Consider the following statements and arrange their values in decreasing order:
A. The interplanar spacing in fcc for \((111)\) is \(d_{111}\),
B. The interplanar spacing in fcc for \((110)\) is \(d_{110}\),
C. The interplanar spacing in fcc for \((100)\) is \(d_{100}\).
If the temperature of an ideal gas is raised from \(T_1\) to \(T_2\) through the following processes, arrange the heat supplied in increasing order:
A. Adiabatic,
B. Isochoric,
C. Isobari
C.
Given below are two statements:
Assertion (A): The cohesive energy of ionic crystals is mainly due to magnetostatic interaction.
Reason (R): It can be calculated on the basis of point charge model.
Given below are two statements:
Assertion (A): The Einstein specific heat \((C_V)\), at low temperature is, \[ C_V=3NK\left(\frac{h\nu}{KT}\right)^3\exp\left(-\frac{h\nu}{KT}\right) \]
Reason (R): The Einstein specific heat, at high temperature, is \(C_V=3NK\).
Given below are two statements:
Assertion (A): The quantum of energy of an elastic wave is called phonon.
Reason (R): The energy of each phonon is \(\epsilon=h\nu\).
Given below are two statements:
Assertion (A): In Kronig Penney model, if the barrier is weak there will be narrow energy gaps.
Reason (R): For weak barrier, transmission is almost equal to one.
Given below are two statements:
Assertion (A): In electromagnetic spectrum, X-rays lie between ultraviolet and \(\gamma\)-rays.
Reason (R): X-rays having wavelengths of the order of more than \(6\ \text{\AA}\).
Given below are two statements:
Assertion (A): The reciprocal lattice of a fcc is a direct lattice of bc
C.
Reason (R): The reciprocal lattice of a bcc is a direct lattice of fc
C.
The Bragg condition is given by:
The magnetic susceptibility is always negative in:
Given below are two statements:
Assertion (A): When air is compressed slowly at STP, there is no change in its temperature.
Reason (R): The process is adiabatic, in adiabatic process there is no change in temperature.
Given below are two statements:
Assertion (A): Ball milling is a top down approach of material synthesis.
Reason (R): Ball milling process converts bulk material into tiny material.
Consider free electron gas, the order of excitation energy for an electron to jump from level \(1\) to level \(2\) is:
Which statistics is used to explain free electron gas?
In Kronig-Penney model, the energy of lower band at \(k=0\) for \(P<<1\) is given by: