METALS AND NON METALS
REVISION
(a) copper (c) aluminium
(b) sulphur (d) iron
2. The substance that will be flattened on beating with a hammer is
(a) crystal of iodine (c) piece of coal
(b) lump of sulphur (d) zinc granule
3. Boojho has learnt that non-metals on beating with a hammer
are generally broken into pieces. Which of the following is a non-
metal?
(a) iron nail (c) copper plate
(b) aluminium wire (d) piece of coal
4. Materials which can be drawn into wires are called ductile. Which
of the following is not a ductile material?
(a) silver (c) sulphur
(b) copper (d) aluminium
5. Metals are generally hard. Which of the following metals is an
exception and can be cut with a knife?
(a) iron (c) gold
(b) sodium (d) magnesium
6. Metals are generally solid. Which of the following metals is in the
liquid state at room temperature?
(a) mercury (c) aluminium
(b) silver (d) sodium
7. Metals generally react with dilute acids to produce hydrogen gas.
Which one of the following metals does not react with dilute
hydrochloric acid?
(a) magnesium (c) iron
(b) aluminium (d) copper
8. Which of the following reacts with cold water vigorously?
(a) carbon (c) magnesium
(b) sodium (d) sulphur
9. The metal which produces hydrogen gas on reaction with dilute
hydrochloric acid as well as sodium hydroxide solution is
(a) copper (c) aluminium
(b) iron (d) sodium
10. Which of the following non-metals reacts and catches fire on
exposure to air?
(a) phosphorus (c) sulphur
(b) nitrogen (d) hydrogen
11. Generally metallic oxides are basic and non-metallic oxides are
acidic in nature. Solution of which of the following oxides in
water will change the colour of blue litmus to red?
(a) sulphur dioxide (c) iron oxide
(b) magnesium oxide (d) copper oxide
12. Which of the following property is not responsible for copper to
be used as electrical conduction wires?
(a) ductility (c) good conductor of electricity
(b) colour (d) it is solid
VERY SHORT ANSWER QUESTIONS
13. Name two soft metals which can be cut with a knife.
14. Which non-metal is essential for our life and all living beings
inhale it during breathing?
15. Name two major non-metals which are present in fertilisers and
enhance the growth of plants.
16. Which non-metal is used to disinfect water?
17. A purple coloured non-metal forms a brown solution in alcohol
which is applied on wounds as an antiseptic. Name the non-
metal.
18. Zinc sulphate forms a colourless solution in water. Will you
observe any colour on adding copper turning in it?
19. Why are bells made of metals?
20. Which liquid metal is used for making thermometers?
21. Which of the following metals can displace the other two metals
from their salt solutions?
zinc, iron, copper
SHORT ANSWER QUESTIONS
22. Paheli bought a statue made of copper. To her surprise it acquired
a dull green coating after a couple of months. Explain the reason.
23. In simple circuit you find that the bulb glows when an iron nail is
placed between two ends of wire. Complete the following sentences
on the bases of this fact.
(a) __________ is a metal.
(b) Metals are good __________ of electricity.
24. If in the above circuit iron nail is replaced by a wooden stick, will the bulb
glow or not? Justify your answer.
25. Paheli prepared a blue coloured solution of copper sulphate in
beaker A and placed an iron nail in it. Boojho prepared a yellowish
green solution of ferrous sulphate in beaker B and placed a copper
wire in it. What changes will they observe in the two beakers
after an hour?
26. Fill in the blanks to complete the following paragraph.
The name of the product formed in the reaction of sulphur and
_____________ is sulphur dioxide gas. When sulphur dioxide is
dissolved in_________________, sulphurous acid is formed. The
sulphurous acid turns _____________ litmus paper to ____________.
Generally oxides of __________ are acidic in nature.
After completing the paragraph write two questions which you
can raise on the basis of this information.
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