| 1 |
The collision between the gas molecules is |
- A. Elastic
- B. Inelastic
- C. Both a and b
- D. None of these
|
| 2 |
No spark plug is needed in the |
- A. Petrol engine
- B. Diesel engine
- C. Gas engine
- D. Water engine
|
| 3 |
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
|
| 4 |
The potential energy to the molecules of an ideal gas is considered to be. |
- A. Maximum
- B. Zero
- C. 1/2 kx<sup>2</sup>
- D. 1/2 kx
|
| 5 |
The SI unit of product of pressure and volume is. |
- A. <sub>Watt</sub>
- B. Joule
- C. Pascal
- D. Newton
|
| 6 |
An ideal heat engine can only be 100% efficient if its cold temperature reservoir is at. |
- A. 0 K
- B. 0 <sup>o</sup>C
- C. 100 K
- D. 100 <sup>o</sup>C
|
| 7 |
A diatomic gas molecules has |
- A. Translational energy only
- B. Rotational energy only
- C. Vibrational energy only
- D. All translational, Rotational and vibrational energy
|
| 8 |
The Carnot cycle can be shown by which graph |
- A. P - T graph
- B. P - V Graph
- C. V- T graph
- D. PV -T graph
|
| 9 |
The internal energy of system does not depend on |
- A. Temperature
- B. Pressure
- C. Path
- D. Final and initial state
|
| 10 |
At constant temperature and pressure, if volume of given mass of a gas is doubled then density is. |
- A. Doubled
- B. 1/4 original
- C. 1/2 of original
- D. Unchanged
|