Metals and Non-metals Test

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Metals and Non-metals Test - 42

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following are not the characteristic property of non-metal?

A
Sonorous

B
Not malleable

C
Not ductile

D
Not lustrous

Solution

Non-metals are not sonorous as they do not produce sound when they are beaten.

Hence, option A is correct.
Question 2
1 / -0

A metal 'M' has shining appearance and reacts with hot water and also with dilute hydrochloric acid to evolve hydrogen gas. The metal 'M' is:

A
can be copper because it lies above hydrogen in the reactivity series, i.e., more reactive than hydrogen

B
can be gold because it lies below hydrogen in the reactivity series, i.e., more reactive than hydrogen

C
cannot be gold because it lies above hydrogen in the reactivity series, i.e., less reactivity than hydrogen

D
cannot be copper because it lies below hydrogen in the reactivity series, i.e., less reactive than hydrogen

Solution

The reactivity series is a list of metals arranged in the order of their decreasing activities. The reactivity series follows the order:
$$K>Na>Ca>Mg>Al>Zn>Fe>Pb>H>Cu>Hg>Ag>Au$$
Thus, 'M' can't be copper as it lies below hydrogen in the reactivity series.
Question 3
1 / -0

In metal reactivity series, the more reactive metals are placed at the:

A
top

B
bottom

C
middle

D
none

Solution

In a reactivity series, the more reactive metals are placed at the top of the series followed by less reactive. The more reactive a metal is, the more will be its tendency to lose electrons.
Question 4
1 / -0

Which two properties are physical properties of all pure metals?

A
Property $$1$$ - brittle, property $$2$$ - poor conductor of heat

B
Property $$1$$ - good conductor of electricity, property $$2$$ - malleable

C
Property $$1$$ - good conductor of heat, property $$2$$ - low melting point

D
Property $$1$$ - malleable, property $$2$$ - low density

Solution

Solution:- (B) Property - good conductor of electricity, property - malleable
Metals are good conductors of electricity and are malleable as well as ductile in nature.
Question 5
1 / -0

Which statement is correct generally for all metals?

A
They conduct electricity

B
They are brittle

C
They are non-sonorous

D
They have a low melting point

Solution

Non-metals are usually brittle, non-sonorous, and have low melting points. Metals have the property to conduct both electricity as well as heat.
Hence, option A is correct.
Question 6
1 / -0

The position of some metals in the electrochemical series in decreasing electropositive character is given as: $$Mg > Al > Zn > Cu > Ag$$. What will happen if a copper spoon is used to stir a solution of aluminium nitrate?

A
The spoon will get coated with aluminium.

B
An alloy of copper and aluminium is formed.

C
The solution becomes blue.

D
No chemical change will take place.

Solution

According to the given electrochemical series, Al is having more electropositive character than that of Cu, that means Al is more reactive than that of Cu and easily replace Cu from its solution, so, when a copper spoon is used to stir aluminum nitrate solution then no reaction occurs.
Question 7
1 / -0

The properties of four elements are shown. Which element is used to make aircraft bodies?
Element 1 - Density - high, brittle or malleable - brittle
Element 2 - Density - high, brittle or malleable - malleable
Element 3 - Density - low, brittle or malleable - brittle
Element 4 - Density - low, brittle or malleable - malleable

A
Element 1

B
Element 2

C
Element 3

D
Element 4

Solution

Solution:- (D) Density - low, brittle or malleable - malleable
The metals used to make aircraft bodies have low density and are malleable such as aluminum, steel, etc.
Thus Element 4 will be the right answer
Question 8
1 / -0

Which substances are needed for iron to rust?

A
Carbon dioxide and oxygen

B
Oxygen only

C
Water and carbon dioxide

D
Water and oxygen

Solution

Iron and steel rust when they come into contact with water and oxygen or moisture.
So, option $$D$$ is correct.
Question 9
1 / -0

Metals such as lead, copper, silver and gold do not react with water at all.

A
Statement is False

B
Statement is True

C
Lead reacts but copper, silver, and gold do not

D
Copper reacts but lead, silver and gold do not.

Solution

Metals such as lead, copper, silver and gold do not react with water because these metals are inert towards cold and hot water.
Question 10
1 / -0

The metal with does not react with hydrochloric acid is/are:

A
Potassium

B
Zinc

C
Aluminium

D
Copper

Solution

Metals react with acids to give metal salt and hydrogen gas. But this is not true for all metals. Only those metals which are more reactive than hydrogen will liberate hydrogen from the acid and forms corresponding metal salt. These metals are placed above hydrogen in the metal activity series.
As copper is less reactive than hydrogen, therefore, it will not liberate hydrogen gas when reacted with dilute HCl.

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Metals and Non-metals Test - 42

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Metals and Non-metals Test - 42

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Question 1

Sonorous

Not malleable

Not ductile

Not lustrous

Solution

Question 2

can be copper because it lies above hydrogen in the reactivity series, i.e., more reactive than hydrogen

can be gold because it lies below hydrogen in the reactivity series, i.e., more reactive than hydrogen

cannot be gold because it lies above hydrogen in the reactivity series, i.e., less reactivity than hydrogen

cannot be copper because it lies below hydrogen in the reactivity series, i.e., less reactive than hydrogen

Solution

Question 3

top

bottom

middle

none

Solution

Question 4

Property $$1$$ - brittle, property $$2$$ - poor conductor of heat

Property $$1$$ - good conductor of electricity, property $$2$$ - malleable

Property $$1$$ - good conductor of heat, property $$2$$ - low melting point

Property $$1$$ - malleable, property $$2$$ - low density

Solution

Question 5

They conduct electricity

They are brittle

They are non-sonorous

They have a low melting point

Solution

Question 6

The spoon will get coated with aluminium.

An alloy of copper and aluminium is formed.

The solution becomes blue.

No chemical change will take place.

Solution

Question 7

Element 1

Element 2

Element 3

Element 4

Solution

Question 8

Carbon dioxide and oxygen

Oxygen only

Water and carbon dioxide

Water and oxygen

Solution

Question 9

Statement is False

Statement is True

Lead reacts but copper, silver, and gold do not

Copper reacts but lead, silver and gold do not.

Solution

Question 10

Potassium

Zinc

Aluminium

Copper

Solution

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