| 1 |
the change in internal energy is defined as |
- A. Q - W
- B. Q-T
- C. Q + P
- D. Q - P
|
| 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 |
A device based upon the thermodynamics property of matter is called. |
- A. Calorimeter
- B. Heat engine
- C. thermometer
- D. Voltmeter
|
| 4 |
A cycle of petrol engine undergoes |
- A. Two process
- B. Three process
- C. Four process
- D. single process
|
| 5 |
S.I Unit of pressure of gas is. |
- A. Nm
- B. N.m
- C. N2/m
- D. N3m
|
| 6 |
Heat is form of. |
- A. Power
- B. Momentum
- C. Energy
- D. Torque
|
| 7 |
The difference between tow molar capacities is equal to. |
- A. Plank's constant
- B. General gas equation
- C. Molar gas constant
- D. Boltzmann constant
|
| 8 |
Value of triple point of water is given as. |
- A. Zero K
- B. 100 K
- C. 273.16 K
- D. 373.16 K
|
| 9 |
If heat engine absorb 400 J and rejects 200 J heat energy, its efficiency will be. |
- A. 25%
- B. 50%
- C. 70%
- D. 100%
|
| 10 |
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
|
