Materials Metals and Non Metals Test

Result

Materials Metals and Non Metals Test - 24

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Weekly Quiz Competition

Question 1
1 / -0

Luster is a phenomenon which can explained as

A
shining of surface by reflection of light

B
deformation into thin sheets

C
deformation into rods

D
free electrons to conduct electricity and heat

Solution

Metallic luster is a property of a metal that describes the amount of light that reflects off the metal surface.
Question 2
1 / -0

Copper metal is used in making:

A
electric wires

B
sheets of the car

C
filling cavity in teeth

D
preparation of hydrogen

Solution

Copper is a good conductor of electricity. Because of that, it is used to make electric wire to conduct the electricity.
Question 3
1 / -0

Which of the following metal is not sonorous at room temperature?

A
Tungsten

B
Copper

C
Mercury

D
Silver

Solution

Mercury is the only metal that is liquid at room temperature. When struck it does not produce sound, therefore, it is non-sonorous.
So, option C is correct.
Question 4
1 / -0

Which of the following metal is non lustrous?

A
Calcium

B
Tungsten

C
Aluminium

D
Lead

Solution

Luster is a property of metals. Almost all metals have luster. However, lead is non-lustrous. It is bright and silvery, but its surface rapidly tarnishes in the air to give a non-lustrous appearance.
Question 5
1 / -0

Why is phosphorus stored in water?

A
It is very reactive.

B
It does not react with water.

C
It reacts with air and catches fire.

D
All of the above

Solution

Phosphorus is a very reactive non-metal. It catches fire if exposed to air. To prevent the contact of phosphorus with atmospheric oxygen, it is stored in water.

Hence, option D is correct.
Question 6
1 / -0

Non-metals are present in which state?

A
Solid

B
Liquid

C
Gaseous

D
All of the above

Solution

Here are examples of non metals that exist in different states.
Solid - Carbon, Phosphorus, etc.
Gases - Oxygen, Nitrogen, etc.
Liquid - Bromine
Hence, option D is correct
Question 7
1 / -0

Which of the following metal is found in our body?

A
Iron

B
Calcium

C
Potassium

D
All of the above

Solution

All the above metals are found in the body and are required for the normal functioning of our body.
Iron is found in hemoglobin and myoglobin which are required for oxygen transport in the body.
Calcium is found in the structure of bones and teeth. Also, plays a role in the growth of nerve cells.
Potassium is the third most abundant mineral in the body. It helps the body regulate fluid, send nerve signals and regulate muscle contractions.
Question 8
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________ is called a space age metal and used in military jets and spacecrafts.

A
Zinc

B
Platinum

C
Copper

D
Titanium

Solution

Titanium is known as the space age metal as it is strong and durable. It is used to make spacecrafts and jets. It is expected to replace most of the metals used in industries. However, it is expensive and its difficult mining process is keeping it from being used as commonly as aluminum or steel.
Question 9
1 / -0

Which of the following non-metal is commonly used as pesticides and photography?

A
Bromine

B
Helium

C
Selenium

D
Iodine

Solution

Bromine compounds are effective pesticides, used to prevent pests from attacking stored grain and other produce. Bromine compounds are also used in photography. Several compounds are used to make the light-sensitive component of a photographic emulsion, without bromine compounds photographs would not capture sufficient light.
Question 10
1 / -0

What is sonority?

A
Capability of producing a deep or ringing sound

B
Capability of being broken into pieces

C
Capability of being hammered into wires

D
None of above

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Materials Metals and Non Metals Test - 24

Result

Materials Metals and Non Metals Test - 24

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SHARING IS CARING

Question 1

shining of surface by reflection of light

deformation into thin sheets

deformation into rods

free electrons to conduct electricity and heat

Solution

Question 2

electric wires

sheets of the car

filling cavity in teeth

preparation of hydrogen

Solution

Question 3

Tungsten

Copper

Mercury

Silver

Solution

Question 4

Calcium

Tungsten

Aluminium

Lead

Solution

Question 5

It is very reactive.

It does not react with water.

It reacts with air and catches fire.

All of the above

Solution

Question 6

Solid

Liquid

Gaseous

All of the above

Solution

Question 7

Iron

Calcium

Potassium

All of the above

Solution

Question 8

Zinc

Platinum

Copper

Titanium

Solution

Question 9

Bromine

Helium

Selenium

Iodine

Solution

Question 10

Capability of producing a deep or ringing sound

Capability of being broken into pieces

Capability of being hammered into wires

None of above

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