| 1 |
Partial pressure of oxygen in the air is. |
- A. 156 torr
- B. 157 torr
- C. 158 torr
- D. 159 torr
|
| 2 |
The commonly used unit of pressure by meteorologists is. |
- A. Atmosphere
- B. Pascal
- C. Milli
- D. Pound inch3
|
| 3 |
The rate of diffusion of a gas of molar mass 72 as compared to H2 will be. |
- A. 1/6 times
- B. 1.4 times
- C. 6 times
- D. same
|
| 4 |
The real gas obeying Van der Waal's equation will resemble ideal gas is. |
- A. both 'a' and 'b' are large
- B. both 'a' and 'b' and small
- C. 'a' is small and 'b' is large
- D. 'a' is large and 'b' is small
|
| 5 |
Weak intermolecular forces are present in. |
- A. Only gases
- B. Only liquid
- C. Only solids
- D. gases, liquids and solids
|
| 6 |
Which mixture of gases is used by the deep sea divers. |
- A. Oxygen and nitrogen
- B. Oxygen and helium
- C. Oxygen and carbon di oxide
- D. Oxygen and water vapours
|
| 7 |
Which one of the following expressions is for ideal gas equation. |
- A. PM= nRT
- B. PV = nRT
- C. PV = dRT
- D. PV= nTP
|
| 8 |
The spreading of fragrance of a rose or scent in air is due to. |
- A. Effusion
- B. Diffusion
- C. Osmosis
- D. Evaporation
|
| 9 |
Which is not example of natural plasma. |
- A. Lightening bolt
- B. Aurora
- C. Neon sign
- D. Sum
|
| 10 |
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
|