MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Isothermal compression requires minimum work. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 2. |
The slope of an isentrope is ____ the slope of an isotherm on p-v diagram. |
| A. | less than |
| B. | greater than |
| C. | equal to |
| D. | less than or equal to |
| Answer» C. equal to | |
| 3. |
At constant entropy, the two TdS equations give us the relation |
| A. | Cp+Cv = 0 |
| B. | Cp=Cv |
| C. | Cp-Cv = mR |
| D. | Cp/Cv = |
| Answer» E. | |
| 4. |
The equation Cp-Cv = -T*( p/ V)( V/ T)2 can also be expressed as |
| A. | Cp-Cv = T*V*(isothermal compressibility)<sup>2</sup> / (volume expansivity) |
| B. | Cp-Cv = T*V*(isothermal compressibility) / (volume expansivity) |
| C. | Cp-Cv = T*V*(volume expansivity)<sup>2</sup> / (isothermal compressibility) |
| D. | Cp-Cv = T*V*(volume expansivity) / (isothermal compressibility) |
| Answer» D. Cp-Cv = T*V*(volume expansivity) / (isothermal compressibility) | |
| 5. |
The volume expansivity and isothermal compressibility is defined as |
| A. | volume expansivity = (1/V)*( V/ T) at p and isothermal compressibility = (-1/V)*( V/ T) at T |
| B. | volume expansivity = (1/V)*( V/ T) at p and isothermal compressibility = (-1/V)*( V/ T) at T |
| C. | volume expansivity = (1/V)*( V/ T) at p and isothermal compressibility = (-1/V)*( V/ T) at T |
| D. | none of the mentioned |
| Answer» B. volume expansivity = (1/V)*( V/ T) at p and isothermal compressibility = (-1/V)*( V/ T) at T | |
| 6. |
For an ideal gas, |
| A. | Cp-Cv = R |
| B. | Cp-Cv = mR |
| C. | Cp=Cv |
| D. | all of the mentioned |
| Answer» C. Cp=Cv | |
| 7. |
When do we have the condition Cp=Cv? |
| A. | as T approaches 0K, Cp tends to approach Cv |
| B. | when ( V/ T)=0, Cp=Cv |
| C. | both of the mentioned are correct |
| D. | none of the mentioned are correct |
| Answer» D. none of the mentioned are correct | |
| 8. |
Consider the equation Cp-Cv = -T*( p/ V)( V/ T)2 , which of the following is correct? |
| A. | ( V/ T)<sup>2</sup> is always positive |
| B. | ( p/ V) for any substance is negative |
| C. | (Cp-Cv) is always positive |
| D. | all of the mentioned |
| Answer» E. | |
| 9. |
What do we get on equating the first and second TdS equations? |
| A. | Cp-Cv = T*( T/ p)*( V/ T) |
| B. | Cp-Cv = T*( p/ T)*( V/ T) |
| C. | Cp+Cv = T*( p/ T)*( V/ T) |
| D. | none of the mentioned |
| Answer» C. Cp+Cv = T*( p/ T)*( V/ T) | |