A cubical box with porous walls containing an equal number of ${\mathrm{O}}_{2}$ and ${\mathrm{H}}_{2}$ molecules is placed in a large evacuated chamber. The entire system is maintained at constant temperature T. The ratio of ${\mathrm{v}}_{\mathrm{rms}}$ of ${\mathrm{O}}_{2}$ molecules to that of the ${\mathrm{v}}_{\mathrm{rms}}$ of ${\mathrm{H}}_{2}$ molecules, found in the chamber outside the box after a short interval is

1.  $\frac{1}{2\sqrt{2}}$

2.  $\frac{1}{4}$

3.  $\frac{1}{\sqrt{2}}$

4.  $\sqrt{2}$

Concept Questions :-

Types of velocity
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

The degrees of freedom of a triatomic gas is

1.  2

2.  4

3.  6

3.  8

Concept Questions :-

Law of equipartition of energy
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

The value of CV for one mole of neon gas is

1.  $\frac{1}{2}\mathrm{R}$

2.  $\frac{3}{2}\mathrm{R}$

3.  $\frac{5}{2}\mathrm{R}$

4.  $\frac{7}{2}\mathrm{R}$

Concept Questions :-

Specific heat
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

At constant volume, for different diatomic gases the molar specific heat is

1. Same and 3 cal/mole/°C approximately

2. Exactly equal and its value is 4 cal/mole/°C

3. Will be totally different

4. Approximately equal and its value is 5 cal/mole/°C

Concept Questions :-

Specific heat
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

At constant volume the specific heat of a gas is $\frac{3\mathrm{R}}{2}$ , then the value of $\text{'}\mathrm{\gamma }\text{'}$ will be

1.  $\frac{3}{2}$

2.  $\frac{5}{2}$

3.  $\frac{5}{3}$

4.  None of the above

Concept Questions :-

Specific heat
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

The relation between two specific heats of a gas is

1.  ${\mathrm{C}}_{\mathrm{P}}-{\mathrm{C}}_{\mathrm{V}}=\frac{\mathrm{R}}{\mathrm{J}}$

2.  ${\mathrm{C}}_{\mathrm{V}}-{\mathrm{C}}_{\mathrm{P}}=\frac{\mathrm{R}}{\mathrm{J}}$

3.  ${\mathrm{C}}_{\mathrm{P}}-{\mathrm{C}}_{\mathrm{V}}=\mathrm{J}$

4.  ${\mathrm{C}}_{\mathrm{V}}-{\mathrm{C}}_{\mathrm{P}}=\mathrm{J}$

Concept Questions :-

Specific heat
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

The specific heat of an ideal gas is

1.  Proportional to $\mathrm{T}$

2.  Proportional to ${\mathrm{T}}^{2}$

3.  Proportional to ${\mathrm{T}}^{3}$

4.  Independent of $\mathrm{T}$

Concept Questions :-

Specific heat
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Molar specific heat at constant volume is ${\mathrm{C}}_{\mathrm{V}}$ for a monoatomic gas is

1.  $\frac{3}{2}\mathrm{R}$

2.  $\frac{5}{2}\mathrm{R}$

3.  $3\mathrm{R}$

4.  $2\mathrm{R}$

Concept Questions :-

Specific heat
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

The following sets of values for ${\mathrm{C}}_{\mathrm{V}}$ and ${\mathrm{C}}_{\mathrm{P}}$ of a gas has been reported by different students. The units are cal/gm-mole-K. Which of these sets is most reliable

1.

2.

3.

4.

Concept Questions :-

Specific heat
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

The specific heats at constant pressure is greater than that of the same gas at constant volume because

1. At constant pressure work is done in expanding the gas

2. At constant volume work is done in expanding the gas

3. The molecular attraction increases more at constant pressure

4. The molecular vibration increases more at constant pressure

Concept Questions :-

Specific heat