EXERCISE 3A

A metal whose density is less than $1$ ${\text{g cm}}^{-3}$ is:

The metal that is not malleable at room temperature is:

A metal that is the best conductor of electricity is:

A non-metal which is stored in water:

Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same.

(i) Good thermal conductivity

(ii) Good electrical conductivity

(iii) Ductility

(iv) High melting point

Name one non-metal and one metal which are in a liquid state at room temperature.

Why is tungsten metal selected for making filaments of incandescent lamp bulbs?

Mention five points of difference between metals and non-metals.