Class 8 Science Chapter-3 Metals and Non-Metals DAV/CBSE Book Solution 2021

Class 8 Science Chapter-3 Metals and Non-Metals DAV/CBSE Book Solution 2021

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Class 8 Science Chapter 3 Metals and Non-Metals (Chemistry)

This Post Contains All The Exercises of 

Chapter-3 Science Of Class 8 .

• A.Fill In The Blanks.

• B.Match The Following.

• C.Tick(√) The Correct Option.

• D.Answer The Following Questions in Brief.

• E.Answer The Following Questions.
• Value Based Question
• Something To Do

 A. Fill in the blanks.

1. The property due to which a metal can be hammered into thin sheets, is known as malleability.

2. Bronze is an alloy of copper and tin.

3. Gold is mixed with copper and/or silver to make it hard.

4. Iodine is the only non-metal to have a natural lustre.

5. Phosphorous is a non-metal which catches fire in the air.

6. The only metal, which exists in the liquid state at room temperature, is mercury.

B. Match the following.

1. Hardest substance- Diamond

2. Aluminium ore- Bauxite

3. A non-metal, normally, existing in the liquid state- Bromine

4. A good electrical conductor- Graphite

5. A metalloid- Arsenic

C. Tick the correct options.

1. The two most abundant metals, found in the earth's crust, are-----

Ans- aluminium and iron

2. The metals, used in making the alloy 'german silver', are----

Ans- Copper+zinc+nickel

3. When a metal reacts with oxygen, the resulting oxide of the metal -->

Ans- is a basic oxide

4. Out of the metals, gold, silver, copper and aluminium, the one, that is most ductile, is-->

Ans- gold

5. Two of the metals, that cannot be stored either in the air or underwater, are-->

Ans- potassium and sodium

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