Uses of Metals

Q.

Give reasons for the following. a) Aluminium foils are used to wrap food items.

Q.

Write the uses of lead and silver.

Q.

Why does copper not react with $HCl$ and$H_{2}S{O}_4$?

Q.

Given below is the table containing the properties of Metals. Identify X and Y in the table.

Property of Metal	Meaning
(a) X	(i) Shining surface
(b) Malleability	(ii) Beaten into thin sheets
(c) Y	(iii) Drawn into thin wires
(d) Sonorous	(iv) Produce sound on striking

1. X - Hardness; Y - Toughness.

2. X - Ductility; Y - Metallic Lustre

3. X - Metallic Lustre; Y - Ductility

4. X -Metallic Lustre; Y - Hardness

Q. Copper can be displaced from aqueous solution of copper sulphate by adding:

1. $Ag$
2. $Au$
3. $Zn$
4. $Fe$

Q.

Look at the picture given below and answer the following question:

(a) Name the metals used in these objects or devices.

(b) What property of metals allows them to be used in these objects?

Q.

Show the given text in the form of flowcharts.

Metals and their uses

Q. Which metal is used to manufacture cans, foils to wrap food, kitchen utensils etc?

1. Potassium
2. Aluminium
3. Copper
4. Zinc

Q. Give one use of all the materials given below.
Aluminium, chlorine, gold, and hydrogen