List of top Questions asked in CUET (PG)

Media that contain some chemical with unknown chemical composition is called __________ media.

Production of secondary metabolites require the use of -

Inducing the formation of various vegetative organs from cells or tissues in plant tissue culture is called -

Plants cannot absorb molecular nitrogen from the atmosphere because

The production of haploids by anther and pollen culture was first demonstrated by -

Plants having half the somatic chromosome number than found in normal individual are called -

Atomic Force Microscopy monitors:

Atomic Force Microscopy is a modified version of:

Which statement is true for Scanning Tunneling Microscopy:

Scanning Tunneling Microscopy is based on:

Lithography is:

Match the LIST-I with LIST-II

LIST-I	LIST-II
A. Field emission	I. detector of gases
B. Chemical sensor	II. strength of plastic composites
C. Mechanical Reinforcement	III. serve as heat sink
D. Computer	IV. flat panel display

Choose the correct answer from the options given below:

Carbon nanotube shows magneto-resistive effects:

As the particle size reduces, the optical absorption spectra shifts towards:

Electronic magic numbers of atoms are:
A. 2
B. 15
C. 10
D. 18
Choose the correct answer from the options given below:

Match the LIST-I with LIST-II

LIST-I (Quantum structures)	LIST-II (Delocalization dimensions)
A. Bulk conductor	I. 0
B. Quantum well	II. 3
C. Quantum wire	III. 1
D. Quantum dot	IV. 2

Choose the correct answer from the options given below:

Surface area to volume ratio of materials:

The characteristic length of nano-materials is:

The electronic contribution of specific heat of copper at 300K is:
(Given that the fermi energy of copper is 7.05eV, and it is assumed to be temperature independent)

In which type of metals, there is overlapping of valence band with the conduction band?

The effective mass of an electron is ______________________________ in the lower part of the band and ______________________________ near the zone boundary (k\(\sim\)\(\pi\)/a).

Match the LIST-I with LIST-II

LIST-I	LIST-II
A. Brillouin Zone	Provides the understanding of the origin of allowed and forbidden bands in solids.
B. Extended Zone Scheme	The electrons in a crystal behave like free electrons for most of the \( k \) values except when it approaches \( n\pi/a \).
C. Periodic Zone Scheme	The E-k curve for several values of \( n \) reduced into the first zone for a simple cubic lattice with vanishing potential.
D. Reduced Zone Scheme	The E-K curve is not continuous and has discontinuities at \( k = \pm n\pi/a \), where \( n=1,2,3,\dots \).

Choose the correct answer from the options given below:

Choose the correct statement for the first Brillouin zone in two dimensions:
A. The region in k space that the electrons can occupy without being diffracted is called the First Brillouin zone.
B. For k<\(\pi\)/a electrons can not move freely in any direction inside the square without being diffracted.
C. For k = \(\pi\)/a electrons are prevented from moving in the x or y directions due to diffraction.
D. For k>\(\pi\)/a electrons can move perpendicularly inside the square.
Choose the correct answer from the options given below:

In the Kronig penny Model, the energy of the lowest band at wave vector k = 0 is given by \( E = \frac{h^2 P}{4\pi^2 m a^2} \). This value of energy holds for which condition of Kronig penny potential (P):

According to the Bloch theorem, which of the following equations is the correct form for Bloch functions: