Air and its Properties

Q.

Why do you think air is transparent?

1. Air traps all the light that falls on it.

2. Air reflects all the light that falls on it.

3. Air allows almost all the light that falls on it to pass through.

4. Constituents of air absorb a significant amount of light rays that fall on them.

Q. ​Which of the following statements are correct?​

I. Higher the air temperature, higher will be the air pressure.​
II. Higher the air pressure, lower will be the volume of air.​
III. Air speed is higher at lower temperature.

1. I, II, and III​
2. I and II​
3. Only III​
4. II and III​

Q. Air is a mixture of many gases, dust particles and water vapour.

1. True
2. False