| 1 |
The diffusion of gases at absolute zero will be |
- A. Unchanged
- B. Zero
- C. slightly decreases
- D. Slightly increases
|
| 2 |
At constant temperature in a given mass of and ideal gas. |
- A. The ratio of pressure and volume remains constant
- B. Volume always remains constant
- C. Pressure always remains constant
- D. The product of pressure and volume remains constant
|
| 3 |
Feeling uncomfortable breathing in un pressurized cabins is due to |
- A. High pressure of CO2
- B. Fatigue
- C. Low pressure of O2
- D. Low presssure of CO2
|
| 4 |
Gases deviate from ideal behaviour at high pressure. Which of the following is correct for non-ideal behaviour of gases |
- A. At high pressure, the gas molecules move in one direction only
- B. At high pressure, the collisions between the gas molecules are increased
- C. At high pressure, the volume of the gas becomes insignificant
- D. At high pressure, the intermolecular attraction becomes significant
|
| 5 |
the order of the rate of diffusion of gases NH<sub>3</sub>, SO<sub>2</sub>, CI<sub>2</sub>and CO<sub>2 </sub>is |
- A. NH<sub>3 </sub>> SO<sub>2</sub>>CI<sub>2</sub>CO<sub>2</sub>
- B. NH<sub>3</sub>> CO<sub>2</sub>> SO<sub>2</sub>> CI<sub>2</sub>
- C. CI<sub>2</sub>> SO<sub>2</sub>> CO<sub>2</sub>> NH<sub>3</sub>
- D. NH<sub>3</sub>> CO<sub>2</sub>> CI<sub>2</sub>> SO<sub>2</sub>
|
| 6 |
Partial pressure of oxygen in the air is. |
- A. 156 torr
- B. 157 torr
- C. 158 torr
- D. 159 torr
|
| 7 |
How should the condition be changed to prevent the volume of a given gas from expanding when its mass is increased |
- A. Temperature is lowered and pressure is increased
- B. Temperature is increase and pressure is lowered
- C. Temperature and pressure both are lowered
- D. Temperature and pressure both are increased
|
| 8 |
If we plot a graph between I/V at x-axis and pressure at Y -axis |
- A. a parabolic graph is obtained
- B. By increasing temperature straight line move toward x axis
- C. By increases temperature straight line move toward y axis.
- D. No. change in line by increasing temperature.
|
| 9 |
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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| 10 |
If the number of gas molecules are doubled in a certain volume of a gas, the pressure is. |
- A. Decreased to half
- B. Doubled
- C. Increased to four time
- D. Remains unchanged
|