What are alloys?

Which metals do not corrode easily?

Metallic oxides of zinc, magnesium and copper were heated with the following metals :

What chemical process is used for obtaining a metal from its oxide?

Define the following terms. (i)Mineral (ii) Ore (iii) Gangue

Why do ionic compounds have high melting points?

What would you observe when zinc is added to a solution of iron (II) sulphate? Write the chemical reaction that takes place.

What would you observe when zinc is added to a solution of iron (II) sulphate? Write the chemical reaction that takes place.

Which gas is produced when dilute hydrochloric acid is added to a reactive metal? Write the chemical reaction when iron reacts with dilute H2SO4.

Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows.

Write equations for the reactions of : (i) iron with steam (ii) calcium and potassium with water

Why is sodium kept immersed in kerosene oil?

Explain the meanings of malleable and ductile.

Give an example of a metal which. (i) is a liquid at room temperature. (ii) can be easily cut with a knife. (iii) is the best conductor of heat. (iv) is a poor conductor of heat.