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. |
Which of the following statements do you think is the correct one? |
| A. | in gases there is a predominance of intermolecular energy |
| B. | all molecules have the same speed at different temperatures |
| C. | collisions of gas molecules are elastic |
| D. | do not exert the same pressure in all directions |
| Answer» D. do not exert the same pressure in all directions | |
| 2. |
Which of the following is not a postulate of Kinetic molecular theory of gases? |
| A. | the actual volume of gas molecules is negligible |
| B. | there are high forces of attraction between the gas molecules |
| C. | collisions are elastic in gas molecules |
| D. | kinetic energy of gas molecules is directly proportional to the absolute temperature |
| Answer» C. collisions are elastic in gas molecules | |
| 3. |
The temperature of a gas is 100 K it is heated until it is 200 k then, what do you understand regarding kinetic energy in this process? |
| A. | halved |
| B. | tripled |
| C. | quadrupled |
| D. | doubled |
| Answer» E. | |
| 4. |
There is an increase in temperature of an object then the kinetic energy of the object __________ |
| A. | decreases |
| B. | increases |
| C. | remains the same |
| D. | it is not related to the temperature |
| Answer» C. remains the same | |
| 5. |
At an instance different particles have ________ speeds. |
| A. | same |
| B. | different |
| C. | opposite |
| D. | similar |
| Answer» C. opposite | |
| 6. |
Collisions of gas molecules are ___________ |
| A. | perfectly elastic |
| B. | inelastic |
| C. | always occur in a proper and predicted motion |
| D. | not conserved |
| Answer» B. inelastic | |
| 7. |
Why do you think the pressure is exerted by the gas on the walls of the container in all directions? |
| A. | they consist of identical particles |
| B. | collide with each other during random motion |
| C. | lack of definite shape |
| D. | more forces of attraction |
| Answer» C. lack of definite shape | |
| 8. |
Gases do not have a fixed shape. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 9. |
Gases ________ and occupy all the space that is available to them. |
| A. | contract |
| B. | compress |
| C. | expand |
| D. | shrink |
| Answer» D. shrink | |
| 10. |
Which of the following assumption explains great compressibility of gases? |
| A. | the actual volume of the gas molecules is negligible |
| B. | there is no force of attraction |
| C. | particles are always in random motion |
| D. | different particles have different speeds |
| Answer» B. there is no force of attraction | |