For a solid with a small expansion coefficient,

1.  Cp - CV = R

2.  Cp = CV

3.  Cp is slightly greater than CV

4.  Cp is slightly less than CV

Subtopic:  Molar Specific Heat |
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The value of Cp – CV is 1.00 R for a gas sample in state A and is 1.08 R in state B. Let pA , pB denote the pressures and TA and TB denote the temperatures of the states A and B respectively. Most likely

1.  pA < pB and TA > TB

2.  pA > pB and TA < T

3.  pA = PB and TA < TB

4.  pA > pB and TA = TB

Subtopic:  Molar Specific Heat |
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Let $$C_v$$ and $$​​C_p$$ denote the molar heat capacities of an ideal gas at constant volume and constant pressure, respectively. Which of the following is a universal constant?
1. $$\frac{C_p}{C_v}$$
2. $$C_pC_v$$
3. $$C_p-C_v$$
4. $$C_p+C_v$$
Subtopic:  Molar Specific Heat |
83%
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$$70$$ calories of heat is required to raise the temperature of $$2$$ mole of an ideal gas at constant pressure from $$30^\circ~\mathrm{C}$$ to $$35^\circ~\mathrm{C}.$$ The amount of heat required to raise the temperature of the same gas through the same range at constant volume is:
1. $$30$$ calories
2. $$50$$ calories
3. $$70$$ calories
4. $$90$$ calories

Subtopic:  Molar Specific Heat |
66%
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The figure shows a process on a gas in which pressure and volume both change. The molar heat capacity for this process is C.

1.   C = 0

2.   C = C

3.   C > CV

4.   C < CV

Subtopic:  Molar Specific Heat |
63%
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The molar heat capacity for the process shown in the following figure is:

1.  C = Cp

2.  C = C

3.  C > CV

4.  C =0

Subtopic:  Molar Specific Heat |
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The molar heat capacity of oxygen gas at STP is nearly 2.5 R. As the temperature is increased, it gradually increases and approaches 3.5 R. The most appropriate reason for this behaviour is that at high temperatures

1.  oxygen does not behave as an ideal gas

2.  oxygen molecules dissociate in atoms

3.  the molecules collide more frequently

4.  molecular vibrations gradually become effective

Subtopic:  Molar Specific Heat |
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Three identical adiabatic containers A, B and C contain helium, neon and oxygen respectively at equal pressure. The gases are pushed to half their original volumes.

(a) The final temperatures in the three containers will be the same.

(b) The final pressures in the three containers will be the same.

(c) The pressures of helium and neon will be the same but that of oxygen will be different.

(d) The temperatures of helium and neon will be the same but that of oxygen will be different

Choose the correct option

1. (a) , (b)

2. (b) , (c)

3. (c) , (d)

4. (a) , (d)

Subtopic:  Molar Specific Heat |
69%
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A rigid container of negligible heat capacity contains one mole of an ideal gas. The temperature of the gas increases by 1°C if 3.0 cal of heat is added to it. The gas may be

(a) helium

(b) argon

(c) oxygen

(d) carbon dioxide

Choose the correct option

1. (a) , (b)

2. (b) , (c)

3. (c) , (d)

4. (a) , (d)

Subtopic:  Molar Specific Heat |
77%
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Four cylinders contain equal number of moles of argon, hydrogen, nitrogen and carbon dioxide at the same temperature. The energy is minimum in

(a) argon

(b) hydrogen

(c) nitrogen

(d) carbon dioxide

Choose the correct option

1. (a) only

2. (b) , (c)

3. (c) , (d)

4. (a) , (d)

Subtopic:  Molar Specific Heat |
76%
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