Question

Write true (T) or false (F):
1. Electric bulbs and gas lamps are natural sources of light. ( )
2. Tungsten is used to make bulb filament. ( )
3. Insulators do not allow electric current to pass through them. ( )
4. Living organisms are made up of cells. ( )
5. Gram is the SI unit of mass. ( )

Answer 1

1. False (F)

Electric bulbs and gas lamps are artificial sources of light.

2. True (T)

3. True (T)

4. True (T)

5. False (F)

The SI unit of mass is the kilogram.