MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
At constant temperature and pressure, for one mole of a pure substance, the ratio of the free energy to the chemical potential is |
| A. | Zero |
| B. | One |
| C. | Infinity |
| D. | Negative |
| Answer» C. Infinity | |
| 2. |
At a given temperature, the volume of a gas dissolved in a solvent __________ with increase in pressure. |
| A. | Increases |
| B. | Decreases |
| C. | Remains unchanged |
| D. | May increase or decrease; depends on the gas |
| Answer» D. May increase or decrease; depends on the gas | |
| 3. |
. __________ does not change during phase transformation processes like sublimation, melting & vaporisation. |
| A. | Entropy |
| B. | Gibbs free energy |
| C. | Internal energy |
| D. | All (A), (B) & (C) |
| Answer» C. Internal energy | |
| 4. |
In the reaction; N2 + O2 ⇌ 2NO, increasing the pressure will result in |
| A. | Shifting the equilibrium towards right |
| B. | Shifting the equilibrium towards left |
| C. | No change in equilibrium condition |
| D. | None of these |
| Answer» D. None of these | |
| 5. |
1m3 of an ideal gas at 500 K and 1000 kPa expands reversibly to 5 times its initial volume in an insulated container. If the specific heat capacity (at constant pressure) of the gas is 21 J/mole . K, the final temperature will be |
| A. | 35 K |
| B. | 174 K |
| C. | 274 K |
| D. | 154 K |
| Answer» D. 154 K | |
| 6. |
Sound waves propagation in air exemplifies an __________ process. |
| A. | Adiabatic |
| B. | Isothermal |
| C. | Isometric |
| D. | None of these |
| Answer» B. Isothermal | |
| 7. |
Work done may be calculated by the expression ∫ p dA for __________ processes. |
| A. | Non-flow reversible |
| B. | Adiabatic |
| C. | Both (A) and (B) |
| D. | Neither (A) nor (B) |
| Answer» D. Neither (A) nor (B) | |
| 8. |
Which of the following is an undesirable characteristic of a refrigerant? |
| A. | It should be non-explosive |
| B. | It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils |
| C. | Its vapor pressure at the condenser temperature should be very high |
| D. | None of these |
| Answer» C. Its vapor pressure at the condenser temperature should be very high | |