| 1 |
How should the conditions be changed to prevent the volume of a give gas from expanding when its mass is increased. |
- A. Temperature is lowered and pressure is increased.
- B. Temperature is increased and pressure is lowered
- C. Temperature and pressure both are lowered
- D. Temperature and pressure both are increased
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| 2 |
Vapour pressure of liquid depends upon |
- A. Amount of liquid
- B. Surface area
- C. Temperature
- D. Size of container
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| 3 |
The commonly used unit of pressure by meteorologists is. |
- A. Atmosphere
- B. Pascal
- C. Milli
- D. Pound inch3
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| 4 |
Critical temperature of CO2 gas is. |
- A. 31.1 <sup>o</sup>C
- B. 13.1 K
- C. 13.1 <sup>o</sup>C
- D. 1.31 <sup>o</sup>C
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| 5 |
The number of molecules in one dm<sup>3</sup>of water is close to |
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| 6 |
Weak intermolecular forces are present in. |
- A. Only gases
- B. Only liquid
- C. Only solids
- D. gases, liquids and solids
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| 7 |
Which one of the following gases cannot be liquefied by Line's method. |
- A. Water vapours
- B. NH3
- C. Nitrogen
- D. H2
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| 8 |
Which of the following will have highest rate of diffusion |
- A. O2
- B. CO2
- C. NH3
- D. SO2
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| 9 |
The free expansion of the gas from high pressure towards the low pressure causes |
- A. Increase of temperature
- B. Decrease of temperature
- C. Grater number of collisions among the molecules
- D. Decrease of velocity of gas molecules
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| 10 |
Pressure remaining constant at which temperature the volume of a gas will become twice of what it is at 0° C |
- A. 546°C
- B. 200°C
- C. 546 K
- D. 273 K
|