| 1 |
The energy processes, we use are |
- A. Efficient
- B. Not efficient
- C. Reversible
- D. None of these
|
| 2 |
For a diatomic gas Cv= 5R/2 then gamma for this gas is. |
- A. 5/7
- B. 4/35
- C. 7/5
- D. 35/4
|
| 3 |
Boltzman constant 'k' has same unit as. |
- A. Temperature
- B. Energy
- C. Entropy
- D. Pressure
|
| 4 |
If heat engine absorb 400 J and rejects 200 J heat energy, its efficiency will be. |
- A. 25%
- B. 50%
- C. 70%
- D. 100%
|
| 5 |
The difference between tow molar capacities is equal to. |
- A. Plank's constant
- B. General gas equation
- C. Molar gas constant
- D. Boltzmann constant
|
| 6 |
A device based upon the thermodynamics property of matter is called. |
- A. Calorimeter
- B. Heat engine
- C. thermometer
- D. Voltmeter
|
| 7 |
First law of thermodynamics can be defined by the equation |
|
| 8 |
the work done in isochoric process is. |
- A. Constant
- B. Variable
- C. Zero
- D. Depend upon condition
|
| 9 |
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
|
| 10 |
When hot and cold water are mixed, the entropy. |
- A. Decreases
- B. Increases
- C. Remain constant
- D. Zero
|