MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Ice (solid water) at 3 C and 100 kPa, is compressed isothermally until it becomes liquid. Find the required pressure. |
| A. | 20461 kPa |
| B. | 30461 kPa |
| C. | 40461 kPa |
| D. | 50461 kPa |
| Answer» D. 50461 kPa | |
| 2. |
An application requires R-12 at 140 C. The triple-point temperature is 157 C. Find the pressure of the saturated vapour at the required condition. |
| A. | 0.0058 kPa |
| B. | 0.0098 kPa |
| C. | 0.0068 kPa |
| D. | 0.0088 kPa |
| Answer» C. 0.0068 kPa | |
| 3. |
Latent heat of sublimation is given by |
| A. | l(sublimation) = -2.303*(R)*(d(1/T)/d(log p )) |
| B. | l(sublimation) = +2.303*(R)*(d(log p )/d(1/T)) |
| C. | l(sublimation) = +2.303*(R)*(d(1/T)/d(log p )) |
| D. | l(sublimation) = -2.303*(R)*(d(log p )/d(1/T)) |
| Answer» E. | |
| 4. |
The slope of sublimation curve is ____ the slope of the vaporization curve at triple point. |
| A. | equal to |
| B. | less than |
| C. | greater than |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 5. |
At the triple point, l(sublimation) = l(vaporization) l(fusion). |
| A. | true |
| B. | false |
| Answer» C. | |
| 6. |
According to Trouton s rule, the ratio of latent heat of vaporization to the boiling point at 1.013 bar is |
| A. | 77 kJ/kgmol K |
| B. | 88 kJ/kgmol K |
| C. | 99 kJ/kgmol K |
| D. | 100 kJ/kgmol K |
| Answer» C. 99 kJ/kgmol K | |