Give Scientific reasons:
Iron is a conductor of electricity, but when we Pick up a Piece of iron resting on the ground, why don't we get electric shock?

Give scientific reasons: Copper and other metals are good conductors of electricity.

Give scientific reasons: We feel tired when we do exercise.

Give scientific reasons: Metals are good conductors of electricity while non-metlas are bad conductors of electricity.

Give scientific reasons: In an electric iron, the coil of high resistance is kept between mica sheets.

Give scientific reasons Why do we need different types of telescopes?

Give scientific reasons: In winter why does an iron pillar feel colder than a wooden pole?

Give scientific reason : A piece of iron sinks in water but floats on mercury.

Answer the following question When do we get current electricity?

Give scientific reasons: Hydrogen gas is not evolved when metals like copper,zinc,iron,etc.react with dilute nitric acid

Give scientific reasons: The coils in heating devices such as a toaster and electric iron are made of an alloy such as Nichrome, rather than a pure metal.