The liquid metal at room temperature (a) Mercury(b) Bromine(c) Sodium(d) Gold.

Name two metals which do not react with oxygen even at high temperature.

Generally non-metals are non-lustrous. Name one non-metal which is lustrous.

Define Malleability.

Define Ductility.

The metal which can be cut with a knife (a) Sodium and potassium(b) Barium and calcium (c) Sodium and mercury(d) Potassium and calcium.

Define the term - ALLOY.

When non-metals react with water then (a) Hydrogen gas is formed (b) Carbon dioxide gas is formed (c) Non-metals do not react with water (d) None of these.

What happens when Iron (Fe) reacts with Oxygen and Moisture?

Composition of Duralumin

Composition of Gun metal

The most reactive metal is: (a) Iron(b) Gold(c) Zinc(d) Potassium.

A non metal which is used in batteries.