| 1 |
The increase in thermal pollution of environment means. |
- A. Increase in the entropy
- B. Decrease in the entropy
- C. Entropy remains constant
- D. Entropy becomes zero
|
| 2 |
If the temperature of a gas is constant then <1/2 mv2> of the molecules of gas will be. |
- A. Constant
- B. Zero
- C. Increase
- D. Decrease
|
| 3 |
The number of spark plug needed in diesel engine is |
|
| 4 |
The internal energy of system does not depend on |
- A. Temperature
- B. Pressure
- C. Path
- D. Final and initial state
|
| 5 |
An ideal reversible heat engine has |
- A. 100% efficiency
- B. Highest efficiency
- C. 80%
- D. 90%
|
| 6 |
If heat is added to a system, then its entropy will. |
- A. Increases and positive
- B. Decrease and positive
- C. Increases but negative
- D. Decreases but negative
|
| 7 |
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
|
| 8 |
A cycle of petrol engine undergoes |
- A. Two process
- B. Three process
- C. Four process
- D. single process
|
| 9 |
In reversible process the entropy of system. |
- A. Remain constant
- B. Decrease
- C. Increase
- D. Becomes zero
|
| 10 |
The measure of hotness or coldness of a substance is. |
- A. Temperature
- B. Heat
- C. Internal energy
- D. Energy
|
