Metals and Non-metals Test

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Metals and Non-metals Test - 40

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Weekly Quiz Competition

Question 1
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Which of the following is not a typical property of an ionic compound?

A
High melting point.

B
Conduct electricity in the molten and in the aqueous solution state.

C
They are insoluble in water.

D
They exist as oppositely charged ions even in the solid state.

Solution

Ionic compounds are highly soluble in water. They dissociate into ions in water. For E.g. NaCl is an ionic compound and is easily soluble in water.
Question 2
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The properties that are NOT possessed by non-metals are:

A
Brittleness

B
Non-conductivity

C
Malleability

D
Low density

Solution

Malleability is the property when a substance can be beaten into thin sheets. It is not shown by non-metals.
Question 3
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The reddish brown deposit formed on iron nails kept in a solution of copper sulphate is:

A
$$Cu_2O$$

B
$$Cu$$

C
$$CuO$$

D
$$CuS$$

Solution

According to reactivity series, iron is more reactive than copper. So it will displace copper from copper sulphate.
$$Fe+CuSO_4\rightarrow FeSO_4+Cu$$
Copper is reddish brown in colour.
Question 4
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Non-metals can't be used to make vessels but metals can. Why?

A
Non-metals are not sonorous.

B
Metals can be drawn into wires, i.e. they possess ductility.

C
Metals are good conductors of heat whereas non-metals are not.

D
Non-metals are not lustrous.

Solution

Metals are good conductors of heat and have high melting points and are therefore used to make cooking vessels. Non-metals don't show these properties.
Question 5
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Which of the following cannot be beaten into thin sheets?

A
$$Al$$

B
$$K$$

C
$$Ar$$

D
$$Zn$$

Solution

$$Ar$$ is a non-metal and also a noble gas so it can't be beaten into thin sheets.
All the other options are metal and they possess malleability i.e., can be flattened into thin sheets by hammering or rolling.
Question 6
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Which of the following can't be beaten into sheets?

A
Zinc

B
Iron

C
Aluminium

D
Sulphur

Solution

Malleability is the property of beating metal into sheets. If a piece of any metal – iron, copper, zinc or aluminium is beaten with a hammer it becomes longer and larger and does not break. Thus metals can be obtained as thin sheets.
In the given options sulphur is a non-metal which can not be beaten into sheets.
Hence, the correct option is $$D$$.

Question 7

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Pavan sorts some materials into two different groups and notes down their properties.
They are listed in the following table:

Group - I	Group - II
Cannot be beaten into thin sheets.	Can be beaten into thin sheets.
When one end is in contact with a hot object, the other end does not become hot quickly.	When one end is in contact with a hot object, the other end becomes hot quickly.
Cannot be turned into thin wires.	Can be turned into thin wires.

Which of the following statements could be incorrect?

Materials of group II can be used to make bells

Materials of group I are generally not shiny and hard

Materials of group I are generally less dense than materials of group II

Materials of group II can be used to make materials that are conductors of electricity

Solution

Materials of group II are metals and hence, they are conductors of electricity.

Question 8
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In the table, the properties of some specimens are given.
Specimen Melting Point Shining Malleability Electric conductivity
$$P$$ High more No insulator
$$Q$$ High less No conductor
$$R$$ High more Yes conductor
$$S$$ Low less Yes low conductor

Which of the specimen is a metal?

A
$$R$$

B
$$Q$$

C
$$P$$

D
$$S$$

Solution

$$R$$ is precisely a metal because it has a high melting point. It is lustrous, highly malleable and a good conductor of electricity.
Question 9
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Rods of carbon and copper are hammered simultaneously. Which property of carbon is responsible for carbon rod breaking down into pieces?

A
Ductility

B
Malleability

C
Lustre

D
Brittle

Solution

Non-metals are brittle and they break when hammered. Carbon, which is a non-metal, thus breaks when hammered.
Question 10
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Which of the following statements are incorrect?
Statement 1: Non-metals possess the property of ductility and malleability
Statement 2: Non-metallic elements are brittle
Statement 3: Metals can produce ringing sound by striking
Statement 4: Melting points and boiling points of metals are low

A
1 and 3

B
2 and 3

C
1 and 4

D
2 and 4
Solution
Non-metals do not possess the property of malleability and ductility.
Non-metals are brittle.
Metals can produce ringing sounds and this property is called sonority.
Metals have high melting and boiling points.
Statements 2 and 3 are correct. Statements 1 and 4 are incorrect.
Option C is correct.

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Specimen	Melting Point	Shining	Malleability	Electric conductivity
$$P$$	High	more	No	insulator
$$Q$$	High	less	No	conductor
$$R$$	High	more	Yes	conductor
$$S$$	Low	less	Yes	low conductor

Metals and Non-metals Test - 40

Result

Metals and Non-metals Test - 40

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Question 1

High melting point.

Conduct electricity in the molten and in the aqueous solution state.

They are insoluble in water.

They exist as oppositely charged ions even in the solid state.

Solution

Question 2

Brittleness

Non-conductivity

Malleability

Low density

Solution

Question 3

$$Cu_2O$$

$$Cu$$

$$CuO$$

$$CuS$$

Solution

Question 4

Non-metals are not sonorous.

Metals can be drawn into wires, i.e. they possess ductility.

Metals are good conductors of heat whereas non-metals are not.

Non-metals are not lustrous.

Solution

Question 5

$$Al$$

$$K$$

$$Ar$$

$$Zn$$

Solution

Question 6

Zinc

Iron

Aluminium

Sulphur

Solution

Question 7

Materials of group II can be used to make bells

Materials of group I are generally not shiny and hard

Materials of group I are generally less dense than materials of group II

Materials of group II can be used to make materials that are conductors of electricity

Solution

Question 8

$$R$$

$$Q$$

$$P$$

$$S$$

Solution

Question 9

Ductility

Malleability

Lustre

Brittle

Solution

Question 10

1 and 3

2 and 3

1 and 4

2 and 4

Solution

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