| 1 |
Which one of the following expressions is for ideal gas equation. |
- A. PM= nRT
- B. PV = nRT
- C. PV = dRT
- D. PV= nTP
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| 2 |
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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| 3 |
The number of molecules in one dm<sup>3</sup>of water is close to |
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| 4 |
Pressure remaining constant at which temperature the volume of a gas will come twice of what it is at 0 <sup>o</sup>C |
- A. 546 <sup>o</sup>C
- B. 200 <sup>o</sup>C
- C. 546 K
- D. 273 K
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| 5 |
Which of the following will have highest rate of diffusion |
- A. O2
- B. CO2
- C. NH3
- D. SO2
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| 6 |
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 |
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| 7 |
Which of the following will have the same number of molecules at STP |
- A. 280 cm<sup>3</sup>of CO<sub>2</sub>and 280 cm<sup>3</sup>of N<sub>2</sub>O
- B. 11.2 dm<sup>3</sup>of O<sub>2</sub>and 32 g of O<sub>2</sub>
- C. 44 g of CO<sub>2</sub>and 11.2 dm<sup>3</sup>of CO
- D. 28 g of N<sub>2</sub>and 5.6 dm<sup>3</sup>of oxygen
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| 8 |
Density of a gas is usually expressed in |
- A. kg m-3
- B. kg dm-3
- C. g dm-3
- D. g cm-3
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| 9 |
If 2 mol of an ideal gas at 546 K occupy a volume of 44.8 dm3, the pressure must be. |
- A. 1 atm
- B. 2 atm
- C. 3 atm
- D. 4 atm
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| 10 |
The concept of distribution of velocities among the gas molecules was given by. |
- A. Clausius
- B. Mexwell
- C. Boltzmann
- D. Vander waal
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