According to kinetic theory of gases, for a diatomic molecule

(A) The pressure exerted by the gas is proportional to the mean velocity of the molecule.

(B) The pressure exerted by the gas is proportional to the root mean square velocity of the molecule.

(C) The root mean square velocity of the molecule is inversely proportional to the temperature.

(D) The mean translational kinetic energy of the molecule is proportional to the absolute temperature.

Concept Questions :-

Kinetic Theory of Gas
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

The values of vander waals constant ‘a’ for the gases ${\mathrm{O}}_{2}$, ${\mathrm{N}}_{2}$${\mathrm{NH}}_{3}$ and ${\mathrm{CH}}_{4}$ are 1.36, 1.39, 4.17 and 2.253 ${\mathrm{lit}}^{2}$ atom mol-2 respectively. The gas which can most easily be liquefied is$-$

(A) ${\mathrm{O}}_{2}$

(B) ${\mathrm{N}}_{2}$

(C) ${\mathrm{NH}}_{3}$

(D) ${\mathrm{CH}}_{4}$

Concept Questions :-

Vanderwaal Correction
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

At low pressure, the vander waals equation is written as :

(A) $\mathrm{Z}=1-\frac{\mathrm{a}}{\mathrm{RTV}}$

(B) $\mathrm{Z}=1-\frac{\mathrm{RTV}}{\mathrm{a}}$

(C) $\mathrm{Z}=1+\frac{\mathrm{a}}{\mathrm{RTV}}$

(D) $\mathrm{Z}=1+\frac{\mathrm{RTV}}{\mathrm{a}}$

Concept Questions :-

Vanderwaal Correction
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

X ml of ${\mathrm{H}}_{2}$ gas effuses through a hole in a container in 5 seconds. The time taken for the effusion of the same volume of the gas specified below under ideal condition is

(A) 10 seconds : $\mathrm{He}$

(B) 20 seconds : ${\mathrm{O}}_{2}$

(C) 25 seconds : $\mathrm{CO}$

(D) 55 seconds : ${\mathrm{CO}}_{2}$

Concept Questions :-

Graham's Law
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

The valves X and Y are opened simultaneously. The white fumes of ${\mathrm{NH}}_{4}\mathrm{Cl}$ will first form at :

(A) A

(B) B

(C) C

(D) A, B and C simultaneously

Concept Questions :-

Graham's Law
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

A gas mixture consists of 2 moles of oxygen and 4 moles of a argon at temperature T. Neglecting all vibrational modes, the total internal energy of the system is –

(A) 4RT

(B) 5RT

(C) 15RT

(D) 11RT

Concept Questions :-

Kinetic Theory of Gas
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Given reaction : . Calculate the volume at STP from 48 gm of carbon and excess ${\mathrm{H}}_{2}\mathrm{O}-$

(A) 179.2 lit.

(B) 89.6 lit.

(C) 44.8 lit.

(D) 22.4 lit.

Concept Questions :-

Ideal Gas Law
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Two gases occupy two containers A and B the gas in A, of volume 0.10 ${\mathrm{m}}^{3}$, exerts a pressure of 1.40 MPa and that in B of volume 0.15 ${\mathrm{m}}^{3}$ exerts a pressure 0.7 MPa. The two containers are united by a tube of negligible volume and the gases are allowed to intermingle. Then if the temperature remains constant, the final pressure in the container will be (in MPa)

(A) 0.70

(B) 0.98

(C) 1.40

(D) 210

Concept Questions :-

Ideal Gas Law
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

The average molecular weight of air is . At 20ºC, the pressure of air at a height of 6 km is half of that at the sea level. Assuming that air contains minute quantities of hydrogen, at what height the partial pressure of hydrogen would be one fourth of the partial pressure at the sea level ? The temperature may be assumed to be the same.

(A) 172.8 km

(B) 4.8 km

(C) 86.4 km

(D) 9.6 km

Concept Questions :-

Ideal Gas Law
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

2.3 grams of a mixture of ${\mathrm{NO}}_{2}$ and ${\mathrm{N}}_{2}{\mathrm{O}}_{4}$ have a pressure of 0.82 atm at temperature, T K and volume, V litres. If $\frac{\mathrm{V}}{\mathrm{T}}=\frac{1}{300}$magnitude, calculate ${{\mathrm{P}}_{\mathrm{NO}}}_{2}.$ Assume that all the ${\mathrm{NO}}_{2}$ was formed ${\mathrm{N}}_{2}{\mathrm{O}}_{4}$.

(A) 0.52 atm

(B) 0.38 atm

(C) 0.19 atm

(D) 0.41 atm

Concept Questions :-

Dalton's Law