| 1 |
Heat is form of. |
- A. Power
- B. Momentum
- C. Energy
- D. Torque
|
| 2 |
At which of the following temperature a body has maximum internal energy. |
- A. -273 <sup>o</sup>C
- B. 0 K
- C. 273 K
- D. -273 K
|
| 3 |
A heat engine operates between the temperature 1000 K and 400 K, Its efficiency is. |
- A. 100%
- B. 70%
- C. 60%
- D. 50%
|
| 4 |
Mercury is used as a thermometric substance because |
- A. It is opaque
- B. Does not stick to glass
- C. Has low specific heat
- D. All of these
|
| 5 |
In thermodynamics system internal energy decrease by 100 J and 100 J of work done on the system then heat lost will be. |
- A. Zero
- B. 100 J
- C. 200 J
- D. -200 J
|
| 6 |
A cycle of petrol engine undergoes |
- A. Two process
- B. Three process
- C. Four process
- D. single process
|
| 7 |
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
|
| 8 |
The molecules of an ideal gas exert |
- A. Force on each other
- B. No force on each other
- C. Large force on each other
- D. Pressure on each other
|
| 9 |
The energy processes, we use are |
- A. Efficient
- B. Not efficient
- C. Reversible
- D. None of these
|
| 10 |
The efficiency of diesel engine is about |
- A. 25 % to 30%
- B. 35% to 40%
- C. 40% to 50%
- D. 50% to 60%
|