A device that converts mechanical energy into electric energy is called_______
The blue colour of clear sky is due to_______________
Copper is used in the production of___________
People living in high altitudes (like mountains) usually have a _________
When water is filled in a bottle and is allowed to freeze, the bottle breaks because
A tight_rope walker carries a long pole which he holds across his body The purpose of this pole is to__________
The sky appears blue because the earth's atmosphere __________
The property by virtue of which metals can be beaten into thin sheets is known as
Steering of a car involves
Which one of the following is the main culprit in the thinning of Ozone layer in the earth’s stratosphere
