Write any two good conductors of electricity.

Name any two poor conductors of electricity.

Graphite is a good conductor of electricity. Give reason.

Alkali metals are good conductors of electricity. Why?

Carbon tetrachloride is not a good conductor of electricity give reason to justify your answer . .

A non-metal X exists in two different forms Y and Z. Y is the hardest natural substance, where as Z is a good conductor of electricity. Identify X, Y and Z.

Which of the following non metal is good conductor of electricity .

Give reasons for the following : (i) Metals are good conductors of electricity whereas non-metals are not. (ii) Ionic compounds have usually high melting and boiling points.

The crystals which are good conductors of electricity and heat are

In the light of metallic bonding account for the following properties of group 2 elements. a. These are harder than alkali metals b. These are good conductors of heat and electricity.

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