| 1 |
What are the SI of excluded volume 'b' in Vander waal equation. |
- A. dm<sup>3</sup> mol -1
- B. m3 mol -1
- C. mol dm-3
- D. mol m-3
|
| 2 |
The spreading of fragrance of a rose or scent in air is due to. |
- A. Effusion
- B. Diffusion
- C. Osmosis
- D. Evaporation
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| 3 |
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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| 4 |
The molecules of a gas show more deviation from ideal behaviour at low temperature, because |
- A. Attractive force dominate at low temperature
- B. Kinetic energies are increased
- C. Collisions become less frequent
- D. Densities of the gases increase
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| 5 |
The temperature of natural plasma is about. |
- A. 200000 <sup>o</sup>C
- B. 10000<sup>o</sup>C
- C. 5000<sup>o</sup>C
- D. 1000<sup>o</sup>C
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| 6 |
Which of the following will have highest rate of diffusion |
- A. O2
- B. CO2
- C. NH3
- D. SO2
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| 7 |
Normal temperature and pressure (S.T.P) of gas rafers to |
- A. 273 K and 76 mm Hg
- B. 273° C and 760 mm Hg
- C. 273 K and 760 mm Hg
- D. 273° C and 76 mm Hg
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| 8 |
Equal masses of methane and oxygen are mixed in an empty container at 25°C, the fraction of total pressure exerted by oxygen is |
- A. 1/3
- B. 8/9
- C. 1/9
- D. 16/17
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| 9 |
In gas occupies a volume of 2 dm<sup>3</sup>at 27°C and I atm pressure. The expression for its volume at S.T.P. is |
|
| 10 |
The deviation of a gas from ideal behavior is maximum at. |
- A. -10 <sup>o</sup>C and 5.0 atm
- B. -10<sup>o</sup>C and 2 atm
- C. 0<sup>o</sup>C and 2 atm
- D. 100<sup>o</sup>C and 2 atm
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