How do we decide that a given material is a good conductor of electricity or is an insulator ?

Would water be a good conductor of electricity?

Which one of the following is a good conductor of electricity?

metals are good conductors of heat as compared to the insulators because

On the basis of Band theory, give reasons: Metals are good conductors of electricity.

Graphite is a covalent solid yet soft and good conductor of electricity. Explain.

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

Answer the following question in one sentence : Name two metals which are good conductors of electricity.

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

How do we find age of fossils ?

How do we get energy?