List of top Atmospheric Science Questions asked in CUET (PG)

Arrange the following semiconductors in descending order of band gap :
A. Si
B. Ge
C. GaP
D. ZnS
E. SiC

The fraction of the FCC unit cell volume filled with hard sphere is :

Arrange the following gases in descending order of root mean square speed : [Given T = 300 K]
A. \( \text{H}_2 \)
B. \( \text{O}_2 \)
C. \( \text{N}_2 \)
D. \( \text{H}_2\text{O} \)
E. \( \text{CO}_2 \)

For elliptical orbits, the ratio $\frac{T^2}{a^3}$ is same for every planetary orbit around a massive body, and its value is : [ where $a$ is semi-major axis of the ellipse, $T$ is time period of motion and $y_r$ is year]

Which one of the following is equivalent to the law of conservation of angular momentum ?

Arrange the following materials in ascending order of their probabilities of photo-electric effect for a $100 \text{ keV}$ photon.
A. C
B. O
C. Sn
D. Pb
E. Ca

A molecule has dipole moment of $6.2 \times 10^{-30} \text{ Cm}$. This molecule is placed in an electric field of $1.5 \times 10^4 \text{ N/C}$. The maximum torque exerted on molecule is :

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : The zero point energy is $\frac{1}{2}h\theta$, it is the lowest value of the energy of the Harmonic Oscillator. Reason (R) : Harmonic Oscillator is in equilibrium with its surroundings, it is called zero-point as it corresponds to an energy $E=E_0$ and not to $E=0$ when the external temperature approaches to $0 \text{ K}$. In the light of the above statements, choose the most appropriate answer from the options given below :

Arrange the following in ascending order of their escape speeds :
A. Jupiter
B. Sun
C. Earth
D. Neutron Star

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : The wavelength of radiation is displaced as temperature changes, but the product of wavelength and temperature remains constant. Reason (R) : Wien's Law is a special case of Planck's radiation law in the region of longer wavelength. In the light of the above statements, choose the most appropriate answer from the options given below :

Intensity of a double-slit interference pattern is represented as: $I(\theta) \propto [\text{interference factor} \times \text{diffraction factor}]$. The diffraction factor is given by: [where $\alpha = \frac{\pi a}{\lambda} \sin\theta, \beta = \frac{\pi d}{\lambda} \sin\theta$, $a$ is width of single slit and $d$ is slit separation]

Which of the following statements are correct about pollution control ?
A. Use of new fuel which has less pollutants.
B. Treatment or removal of pollutant.
C. Increase the use of pollutant sources.
D. Incomplete burning of carbon particulates.
E. Purification of air using natural cycle.
Choose the correct answer from the options given below :

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Air pollution causes significant deterioration in visibility.
Reason (R) : The rates of emissions or formation of pollutants greatly exceed the rate at which the pollutants are dispersed by winds or removed by chemical reaction.
In the light of the above statements, choose the most appropriate answer from the options given below :

The virtual temperature correction for moist air at 40$^\circ$C that has a mixing ratio of 25 g kg$^{-1}$ is :

Which one of the following is NOT an objective of Air Monitoring ?

Which one of the following is INCORRECT about the impact of atmospheric pollution and emission of Greenhouse gases ?

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Smog refers to heavily polluted air that forms in cities during winter.
Reason (R) : It is the emission of CH$_4$ and aerosols from the burning of fossils.
In the light of the above statements, choose the most appropriate answer from the options given below :

What is the relative efficiency of air molecules to scatter blue light ($\lambda = 470$ nm) as compared to red light ($\lambda = 640$ nm)?

Which one of the following is artificial pollutant ?

Which of the following statements are correct about standard deviation ?
A. It is the root-mean-square deviation from mean.
B. It is always positive.
C. It is dependent of the change of origin.
D. It is independent of the scale of measurement.
Choose the correct answer from the options given below :

Which of the following statements are correct about the correlation co-efficient ?
A. Its value falls between $-1$ and $+1$.
B. Its value changes when the unit of measurement gets changed.
C. It measures only the strength of linear association between variables.
D. It is a dimensionless quantity.
Choose the correct answer from the options given below :

Let $x_1, x_2, \ldots, x_{n_1}$ and $y_1, y_2, \ldots, y_{n_2}$ are two independent random samples from normal population with same variance. To test the hypothesis, the t-test is given by : [Here $\mu_1$ and $\mu_2$ are means of two samples].

Which one of the following reservoirs of water in the Earth system has largest residence time ?

The variance of 20 observations is 5. If each observation is multiplied by 2, then, the new variance of resulting observations is:

The errors of an experiment are of random nature and follows a normal distribution. If standard deviation is '$\sigma$', the probable error is: