# The ratio of the specific heats $\frac{{\mathrm{C}}_{\mathrm{P}}}{{\mathrm{C}}_{\mathrm{V}}}=\gamma$ in terms of degrees of freedom ($$n$$) is given by: 1. $$1+1/n$$ 2. $$1+n/3$$ 3. $$1+2/n$$ 4. $$1+n/2$$

Subtopic:  Specific Heat |
81%
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NEET - 2015
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Which one of the following gases possesses the largest internal energy?
 1 2 moles of helium occupying 1 m3 at 300 K 2 56 kg of nitrogen at $$10^5 ~\text{Nm}^{-2}$$ and 300 K 3 8 grams of oxygen at 8 atm and 300 K 4 $$6 \times 10^{26}$$ molecules of argon occupying 40 m3 at 900 K
Subtopic:  Law of Equipartition of Energy |
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The molecules of a given mass of gas have rms velocity of 200 ms-1 at $$27^{\circ}\mathrm{C}$$ and 1.0 x 105 Nm-2 pressure. When the temperature and pressure of the gas are increased to, respectively, $$127^{\circ}\mathrm{C}$$ and 0.05 X 10Nm-2, rms velocity of its molecules in ms-1 will become:
1. 400/√3
2. 100√2/3
3. 100/3
4.100√2

Subtopic:  Types of Velocities |
79%
From NCERT
NEET - 2016
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At room temperature, the rms speed of the molecules of certain diatomic gas is found to be $$1930$$ m/s. The gas is:
1. $$H_2$$
2. $$F_2$$
3. $$O_2$$
4. $$Cl_2$$

Subtopic:  Types of Velocities |
61%
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At which temperature the velocity of $$\mathrm{O_2}$$ molecules will be equal to the velocity of $$\mathrm{N_2}$$ molecules at $$0^\circ \mathrm{C}?$$

 1 $$40^\circ \mathrm{C}$$ 2 $$93^\circ \mathrm{C}$$ 3 $$39^\circ \mathrm{C}$$ 4 Cannot be calculated
Subtopic:  Types of Velocities |
77%
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If the pressure in a closed vessel is reduced by drawing out some gas, the mean free path of the molecules:

 1 decreases 2 increases 3 remains unchanged 4 increases or decreases according to the nature of the gas

Subtopic:  Mean Free Path |
74%
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The specific heat of an ideal gas is:

1.  proportional to $\mathrm{T.}$

2.  proportional to T2.

3.  proportional to T3.

4.  independent of $\mathrm{T.}$

Subtopic:  Specific Heat |
63%
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The specific heat of a gas:

 1 has only two values $$Cp$$ and $$Cv$$. 2 has a unique value at a given temperature. 3 can have any value between 0 and  ∞. 4 depends upon the mass of the gas.

Subtopic:  Specific Heat |
57%
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For hydrogen gas $$C_P-C_V=a$$ and for oxygen gas $$C_P-C_V=b$$ where molar specific heats are given. So the relation between $$a$$ and $$b$$ is given by: (where $$C_p$$ and $$C_V$$ in J mol-1 K-1)
1. $$a=16b$$
2. $$b=16a$$
3. $$a=4b$$
4. $$a=b$$

Subtopic:  Specific Heat |
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The translatory kinetic energy of a gas per $$\text{g}$$ is:

 1 $${3 \over 2}{RT \over N}$$ 2 $${3 \over 2}{RT \over M}$$ 3 $${3 \over 2}RT$$ 4 $${3 \over 2}NKT$$
Subtopic:  Kinetic Energy of an Ideal Gas |
61%
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