GENERAL SCIENCE CLASS 8 MCQS

The unit of luminous intensity in SI system is:

1. Lumen (lm)
2. Watt (W)
3. Candela (cd)
4. Lux (lx)

What is the correct order, in increasing size, for measurement of length:

1. Meter, Centimetre, Millimetre
2. Centimetre, Meter, Millimetre
3. Meter, Millimetre, Centimetre
4. Millimetre, Centimetre, Meter

10^-3 second is called as:

1. Millisecond
2. Microsecond
3. Nanosecond
4. Picosecond

A mass of 4 kg is equal to:

1. 400 g
2. 4000g
3. 40 g
4. 40000 g

0.05 kilometre is equal to:

1. 5m
2. 500m
3. 50m
4. 5000m

A measuring cylinder is used in a laboratories for measuring exact volume of a:

1. Solid
2. Gas
3. Powder
4. Liquid

Increase of the size (length, area and volume) of a body due to change in temperature is called:

1. Thermal Expansion
2. Thermal Contraction
3. Thermal Density
4. Thermal Compression

Decrease of the size (length, area and volume) of a body due to change in temperature is called:

1. Thermal Expansion
2. Thermal Contraction
3. Thermal Density
4. Thermal Compression

Which does not make use of the expansion and contraction:

1. A thermometer
2. An electric iron
3. A railway track
4. An electric fan

The water has minimum density at:

1. O°C
2. 2°C
3. 3°C
4. 4°C