- 1(current)
Q. No.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
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 < TB
3. pA = PB and TA < TB
4. pA > pB and TA = TB
1. \(\frac{C_p}{C_v}\)
2. \(C_pC_v\)
3. \(C_p-C_v\)
4. \(C_p+C_v\)
1. \(30\) calories
2. \(50\) calories
3. \(70\) calories
4. \(90\) calories
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 = CV
3. C > CV
4. C < CV
The molar heat capacity for the process shown in the following figure is:
1. C = Cp
2. C = Cv
3. C > CV
4. C =0
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
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)
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)
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)
- 1(current)
Q. No.
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