GENERAL SCIENCE CLASS 8 MCQS

If an enclosed gas container with moveable piston is heated. What will happen:

1. Volume will be decreased
2. Volume will remain constant
3. Volume will be increased
4. Pressure will be increased

What is relation between Volume of a gas and Pressure:

1. Directly Proportional
2. Exponentially Related
3. Not Related
4. Inversely Proportional

Pressure increases when:

1. Volume is increased
2. Temperature is increased
3. Area of contact is decreased
4. Area of contact is increased

Pressure in gases is due to:

1. Collision of molecules with walls of containers
2. Vibration of molecules
3. Rotation of molecules
4. Electromagnetic attraction between molecules

Which of the following factor does not affect the pressure of the gas in a container:

1. Temperature
2. Volume
3. Density of gas
4. Container material

Amount of pressure of liquid increases with increase of:

1. Depth
2. Volume
3. Temperature
4. Surface tension

The study of the behaviour and applications of compressed air is called:

1. Hydraulic Technology
2. Pneumatic Technology
3. Aerodynamic Technology
4. Hydrostatic Technology

Pneumatic systems is (are) used in:

1. Spray guns
2. Pumps
3. Vacuum cleaner
4. Dental drill or dentistry tools
5. All of these

Which one among the following is not an example of pneumatic system:

1. Spray gun
2. Bicycle pump
3. Vacuum cleaner
4. Car brake

A suspension of fine solid particles or liquid droplets, in air or another gas is called an:

1. Pneumatic
2. Hydraulic
3. Aerosols
4. None