MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The temperature of an object increases slowly, then the energy of that object _________ |
| A. | increases slowly |
| B. | decreases quickly |
| C. | increases quickly |
| D. | decreases slowly |
| Answer» B. decreases quickly | |
| 2. |
If the work is done on an adiabatic wall, then which of the following is true? |
| A. | ΔU = -W |
| B. | ΔU = W |
| C. | ΔU + W = 0 |
| D. | ΔU = -W |
| Answer» C. ΔU + W = 0 | |
| 3. |
Both isolated and closed systems are the same. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
An open system allows the transfer of ________ |
| A. | only mass |
| B. | only energy |
| C. | both mass and energy |
| D. | neither mass nor energy |
| Answer» D. neither mass nor energy | |
| 5. |
The first law of thermodynamics states that the energy of an isolated system is constant. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 6. |
An adiabatic process pressure is related to volume as _________ |
| A. | PV = constant |
| B. | PVγ constant |
| C. | PV3 constant |
| D. | PV2 constant |
| Answer» C. PV3 constant | |
| 7. |
In an adiabatic process the work done is 50 KJ, what is its internal energy? |
| A. | 50 KJ |
| B. | 25 KJ |
| C. | -50 KJ |
| D. | -25 KJ |
| Answer» D. -25 KJ | |
| 8. |
The system that does not allow the heat to pass through its boundary between the system and surroundings is called as ______________ system. |
| A. | adiabatic |
| B. | open |
| C. | isothermal |
| D. | close |
| Answer» B. open | |
| 9. |
When work is done on system or by a system there is a change in _________ |
| A. | external energy |
| B. | internal energy |
| C. | adiabatic energy |
| D. | isothermal energy |
| Answer» C. adiabatic energy | |
| 10. |
Which of the following property cannot be used to describe the state of a system? |
| A. | pressure |
| B. | volume |
| C. | temperature |
| D. | universal gas constant |
| Answer» E. | |