GENERAL SCIENCE CLASS 8 MCQS

What is the colour of phenolphthalein indicator in basic medium:

1. Red
2. Yellow
3. Pink
4. Blue

Force per unit area is called:

1. Volume
2. Density
3. Velocity
4. Pressure

Force has:

1. Magnitude and Direction
2. Velocity and Acceleration
3. Mass and Volume
4. Energy and Momentum

A truck has tyres of area 3 m^2. It puts a pressure of 4000 N/m^2 on the road. What is the weight of the truck? (Hint: Weight =Force):

1. 8000 N
2. 12000 N
3. 16000 N
4. 20000 N

A unit of pressure is equal to 1 newton per square meter (N/m^2) is known as:

1. Newton
2. Joule
3. Pascal
4. Kelvin

Pascal’s Principle is widely used in a:

1. Electrical System
2. Hydraulic System
3. Pneumatic System
4. Mechanical System

A branch of science that deal with practical applications of liquid in motion is called:

1. Hydrology
2. Pneumatic
3. Hydraulics
4. Hydrostatics

Which fluid is used in hydraulic power systems:

1. Water
2. Oil
3. Non-compressible fluid
4. All of these

The greater the speed of gas particles in a container, the:

1. Lower the pressure
2. Greater the pressure
3. No effect on pressure
4. Constant pressure

If the container of enclosed gas heated, what will happen inside the container:

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