Metals and Non-metals Test

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Metals and Non-metals Test - 25

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Weekly Quiz Competition

Question 1
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Which of the following elements has two electrons in the outermost shell but is a non–metal?

A
Magnesium

B
Calcium

C
Barium

D
Helium

Solution

Among the following option, helium is the non-metal which has two electrons in its outermost shell.
Hence, the correct option is (D).
Question 2
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Which of the following metals has the highest malleability?

A
Copper

B
Caesium

C
Magnesium

D
Gold

Solution

Among the following options, Gold is the most malleable metal.
Malleability is the property of a metal, in which metal can be drawn into sheets and It varies according to temperature.
Hence, the correct option is (D).
Question 3
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Which of the following metals can be cut with knife?

A
Copper

B
Aluminium

C
Potassium

D
Magnesium

Solution

Potassium and sodium are the metals which are very soft, so they can even cut with knife.
Hence, the correct option is (C).
Question 4
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Which of the following metals has the lowest density?

A
Gold

B
Copper

C
Chromium

D
Sodium

Solution

Among the following options,Sodium has the lowest density, due to its low atomic mass and large atomic radius.
Hence, the correct option is (D).
Question 5
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Which of the following allotropic forms of carbon is a good conductor of electricity?

A
Diamond

B
Fullerenes

C
Graphite

D
None of these

Solution

Graphite, a allotrope of carbon is a good conductor of electricity because it contains delocalized electrons which are carriers of electrical current. In graphite, the carbon atom is connected to three adjacent carbon atoms due to which one electron remains free which is responsible for conducting electricity.
Hence, the correct option is (C).
Question 6
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Which of the following elements will produce a sound on striking a hard surface?

A
Phosphorus

B
Sulphur

C
Chlorine

D
Copper

Solution

Among the following metals, copper will produce sound on striking a hard surface. It is sonorous.
Sonorous means, metals make a ringing sound when we strike them with a hard surface.
Hence, the correct option is (D).
Question 7
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Which of the following elements will have a low melting point and a low boiling point?

A
Carbon (allotropic form of diamond)

B
Carbon (allotropic form of graphite)

C
Iron

D
Phosphorus

Solution

Among the given options, phosphorus has low melting and boiling point.
Hence, the correct option is (D).
Question 8
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Non–metals are not used for making cooking vessels because

A
they are very expensive

B
they are very reactive

C
they are bad conductors of heat

D
they are very hard

Solution

Non-metals are not used for making cooking utensils as they are bad conductor of heat.
Cooking utensils are made up of copper and aluminium because they are good conductors of heat and hence food can be easily cooked in them.
Hence, the correct option is (C).
Question 9
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What do you mean by thermal conductivity?

A
The ability of a material to conduct heat from the hot end to the cold end.

B
The ability of a material to absorb heat.

C
The ability of a material to dissipate heat.

D
The ability of a material to transfer heat from cold end to hot end.

Solution

The thermal conductivity of a material is a measure of its ability to conduct heat.Heat is transferred from a surface having high temperature to a surface having low temperature.
Hence, the correct option is (A).
Question 10
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Which of the following metals has the highest density?

A
Sodium

B
Lithium

C
Mercury

D
Potassium

Solution

Among the following metals, Mercury has the highest density. It has density of 13.53 g cm^-3.
Hence, the correct option is (C).

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Metals and Non-metals Test - 25

Result

Metals and Non-metals Test - 25

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Question 1

Magnesium

Calcium

Barium

Helium

Solution

Question 2

Copper

Caesium

Magnesium

Gold

Solution

Question 3

Copper

Aluminium

Potassium

Magnesium

Solution

Question 4

Gold

Copper

Chromium

Sodium

Solution

Question 5

Diamond

Fullerenes

Graphite

None of these

Solution

Question 6

Phosphorus

Sulphur

Chlorine

Copper

Solution

Question 7

Carbon (allotropic form of diamond)

Carbon (allotropic form of graphite)

Iron

Phosphorus

Solution

Question 8

they are very expensive

they are very reactive

they are bad conductors of heat

they are very hard

Solution

Question 9

The ability of a material to conduct heat from the hot end to the cold end.

The ability of a material to absorb heat.

The ability of a material to dissipate heat.

The ability of a material to transfer heat from cold end to hot end.

Solution

Question 10

Sodium

Lithium

Mercury

Potassium

Solution

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