Materials Metals and Non Metals Test

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Materials Metals and Non Metals Test - 17

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Weekly Quiz Competition

Question 1
1 / -0

$$X+CuSO_4 \rightarrow XSO_4 + Cu$$,
$$Y+CuSO_4 \rightarrow YSO_4 +Cu$$
In these reactions X and Y may be :

A
$$Zn, Ag$$

B
$$Zn, Fe$$

C
$$Fe, Ag$$

D
$$Ag, Al$$

Solution

Zn and Fe are more reactive than Cu and can displace it from its salt solution. So, in the above reaction X and Y may be Zn and Fe.
Question 2
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The property of metals by virtue of which, they produce sound when struck is called :

A
sonority

B
permeability

C
ductility

D
malleability

Solution

Sonority (of a material) is the property of producing a ringing sound when struck. Most metals are sonorous. Therefore, they are used in many instruments (eg. cymbals and bells). Almost all non-metals are non-sonorous, i.e. they don't produce a ringing sound when struck.

Hence, the correct option is $$\text{A}$$
Question 3
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Which of the following is a lustrous non-metal?

A
Chlorine

B
Nitrogen

C
Iodine

D
Fluorine

Solution

Non-metals do not have lustre. They do not reflect light from their surface (exception - graphite, diamond and iodine). Non-metals have a dull appearance.
Option C is correct.
Question 4
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Non-metal that has a metallic lustre and sublimes on heating is :

A
chlorine

B
bromine

C
oxygen

D
iodine

Solution

Iodine is an intensely colored solid with an almost metallic lustre. This solid is relatively volatile and it sublimes when heated to form a violet-colored gas.
Option D is correct.
Question 5
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Why non-metals are not ductile?

A
They are hard

B
They are soft

C
They are brittle

D
All of above

Solution

Non-metals are not ductile because they are brittle in nature. They break easily. Such non-metals cannot be deformed by a hammer or rolling.
Hence, option $$C$$ is correct.
Question 6
1 / -0

Elements which form positively charged ions by losing electrons in all chemical reaction are called:

A
metals

B
non-metals

C
metalloids

D
none of the above

Solution

The element (except hydrogen) which form positively charged ions (i.e. cations) by losing electrons in all chemical reactions are called metals.
Option $$A$$ is correct.
Question 7
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Metals are _________ i.e., they make sound when hit with an object.

A
sonorous

B
lustrous

C
reactive

D
brittle

Solution

Since metals produce the ringing sound, they are said to be sonorous. Sound making property is known as sonority, i.e., when hit with an object they make a sound.
Hence, option $$A$$ is correct.
Question 8
1 / -0

Which of the following is not a correct statement?

A
Non-metals melt at low temperature

B
Non-metals are generally bad conductors of heat and electricity

C
Non-metals are non-sonorous

D
Non-metals are malleable

Solution

Non-metals are not malleable.
Non-metals are malleable, which is an incorrect statement.
Question 9
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Which of the following metal is a preferred material for making conducting wires and in electrical appliances? Even though silver is the best conductor of electricity.

A
Gold

B
Platinum

C
Copper

D
Lead

Solution

Copper is widely used in electrical wiring, but silver is the best conductor. Silver is more expensive, though. Copper is used more often in electrical appliances because copper is less expensive.
Question 10
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Why is sodium stored in kerosene?

A
It sublimates if kept in open.

B
It is highly reactive and burns in air.

C
To protect it from rusting.

D
None of the above

Solution

Sodium metal is very reactive. It reacts vigorously with oxygen and water. A lot of heat is generated in this reaction. Hence, it can react with water vapour and oxygen present in the air. Thus, it is stored in kerosene to avoid this violent reaction.

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Re-Attempt Weekly Quiz Competition

Materials Metals and Non Metals Test - 17

Result

Materials Metals and Non Metals Test - 17

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Question 1

$$Zn, Ag$$

$$Zn, Fe$$

$$Fe, Ag$$

$$Ag, Al$$

Solution

Question 2

sonority

permeability

ductility

malleability

Solution

Question 3

Chlorine

Nitrogen

Iodine

Fluorine

Solution

Question 4

chlorine

bromine

oxygen

iodine

Solution

Question 5

They are hard

They are soft

They are brittle

All of above

Solution

Question 6

metals

non-metals

metalloids

none of the above

Solution

Question 7

sonorous

lustrous

reactive

brittle

Solution

Question 8

Non-metals melt at low temperature

Non-metals are generally bad conductors of heat and electricity

Non-metals are non-sonorous

Non-metals are malleable

Solution

Question 9

Gold

Platinum

Copper

Lead

Solution

Question 10

It sublimates if kept in open.

It is highly reactive and burns in air.

To protect it from rusting.

None of the above

Solution

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