| 1 |
In reversible process the entropy of system. |
- A. Remain constant
- B. Decrease
- C. Increase
- D. Becomes zero
|
| 2 |
The internal energy of a piece of lead when beaten by hammer will. |
- A. Increase
- B. Decrease
- C. Remains constant
- D. Increases and then decrease
|
| 3 |
Not change in entropy of a system after one complete Carnot cycle is. |
- A. Positive
- B. Negative
- C. Zero
- D. None of these
|
| 4 |
Temperature of a gas is increased from 27 oC to 127 oC. The ratio of its mean K.E. will be |
- A. 3/4
- B. 9/16
- C. 4/3
- D. 10/9
|
| 5 |
The efficiency of a Carnot Heat Engine is 100% if temperature of sink T2 is. |
- A. 0 <sup>o</sup>C
- B. 0 K
- C. 0 <sup>o</sup>F
- D. 100 K
|
| 6 |
In case the work done in zero. |
- A. Constant pressure
- B. Constant volume
- C. Constant temperature
- D. Constant mass
|
| 7 |
The curve representing an adiabatic process is called. |
- A. An adiabatic
- B. An isotherm
- C. Both of these
- D. None of these
|
| 8 |
Which is an example of irreversible process. |
- A. Explosion
- B. Evaporation
- C. Slow compression
- D. A chemical explosion
|
| 9 |
Average translational K.E. of molecules for an ideal gas is given as |
- A. 1/2 KT
- B. KT
- C. 2/3 KT
- D. 3/2 KT
|
| 10 |
For a gas obeying Boyle's Law, if the pressure is doubled, the volume becomes. |
- A. Double
- B. Three fold
- C. One half
- D. Remains the same
|
