MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Characteristic gas constant is given by (here cp=specific heat at constant pressure and cv is the specific heat at constant volume) |
| A. | R=cv – cp |
| B. | R=cp + cv |
| C. | R=cp – cv |
| D. | none of the mentioned |
| E. | R=cv – cpb) R=cp + cvc) R=cp – cvd) none of the mentioned |
| Answer» D. none of the mentioned | |
| 2. |
Which of the following statement is correct for an ideal gas? |
| A. | h=u+pv |
| B. | h=u+RT |
| C. | h=f(T) |
| D. | all of the mentioned |
| Answer» E. | |
| 3. |
Which of the following statement is true? (c is the specific heat at constant volume) |
| A. | the equation du=c*dT holds good for an ideal gas for any process |
| B. | for gases other than ideal ones, the equation holds true for a constant volume process only |
| C. | for an ideal gas c is constant and hence Δu=c*ΔT |
| D. | all of the mentioned |
| E. | the equation du=c*dT holds good for an ideal gas for any processb) for gases other than ideal ones, the equation holds true for a constant volume process onlyc) for an ideal gas c is constant and hence Δu=c*ΔTd) all of the mentioned |
| Answer» E. the equation du=c*dT holds good for an ideal gas for any processb) for gases other than ideal ones, the equation holds true for a constant volume process onlyc) for an ideal gas c is constant and hence Δu=c*ΔTd) all of the mentioned | |
| 4. |
For an ideal gas, internal energy is a function of temperature only. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 5. |
At constant temperature, (u being the internal energy) |
| A. | u change when v or p changes |
| B. | u does not change when v or p changes |
| C. | u does not change when t changes |
| D. | u always remains constant |
| Answer» C. u does not change when t changes | |
| 6. |
For real gases, |
| A. | specific heats vary appreciably with temperature |
| B. | specific heats vary little with pressure |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 7. |
Specific heats are constant for an ideal gas. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 8. |
The equation of state of an ideal gas is given by |
| A. | pV=mRT, here R is characteristic gas constant |
| B. | pV=nRT, here R is universal gas constant |
| C. | pV=NKT |
| D. | all of the mentioned |
| Answer» E. | |
| 9. |
Which of the following statement is true?a) characteristic gas constant is given by dividing the universal gas constant by the molecular weightb) Avogadro’s number ( |
| A. | characteristic gas constant is given by dividing the universal gas constant by the molecular weight |
| B. | Avogadro’s number (A) = 6.023 * 10^26 molecules/kgmol |
| C. | Boltzmann constant (K) = 1.38 * 10^-23 J/molecule K |
| D. | all of the mentioned |
| Answer» E. | |
| 10. |
The value of universal gas constant is |
| A. | 8.2353 |
| B. | 8.3143 |
| C. | 8.5123 |
| D. | none of the mentioned |
| Answer» C. 8.5123 | |
| 11. |
An ideal gas is one which obeys the law pv=RT at all pressures and temperatures. |
| A. | true |
| B. | false |
| Answer» B. false | |