What is meant by saying that metals are sonorous?

Important Questions on Materials: Metals and Non-Metals

MEDIUM

8th CBSE

IMPORTANT

Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 4 - Materials: Metals and Non-Metals>Short Answer Type Questions>Q 43

There are two boxes, one made of metal and the other made of wood, which are similar in appearance. How will you find out which box is made of metal?

MEDIUM

8th CBSE

IMPORTANT

Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 4 - Materials: Metals and Non-Metals>Short Answer Type Questions>Q 44

Consider the following materials:
Copper, Sulphur, Phosphorus, Carbon (such as pencil lead), Gold, Silver.
Which of these materials are malleable and ductile?

MEDIUM

8th CBSE

IMPORTANT

Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 4 - Materials: Metals and Non-Metals>Short Answer Type Questions>Q 44

Consider the following materials:
Copper, Sulphur, Phosphorus, Carbon (such as pencil lead), Gold, Silver.
Which of these materials is brittle?

MEDIUM

8th CBSE

IMPORTANT

Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 4 - Materials: Metals and Non-Metals>Short Answer Type Questions>Q 45

Can you hold a hot metallic pan which is without a plastic or a wooden handle? Give reason for your answer.

MEDIUM

8th CBSE

IMPORTANT

Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 4 - Materials: Metals and Non-Metals>Short Answer Type Questions>Q 46

The screwdriver used by an electrician has a plastic or wooden handle. Why?

MEDIUM

8th CBSE

IMPORTANT

Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 4 - Materials: Metals and Non-Metals>Short Answer Type Questions>Q 47

What is nature (acidic/basic) of the magnesium oxide?
Give the reason for your choice.

MEDIUM

8th CBSE

IMPORTANT

Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 4 - Materials: Metals and Non-Metals>Short Answer Type Questions>Q 47

What is the nature (acidic/basic) of sulphur dioxide
Given reason for your choice.

MEDIUM

8th CBSE

IMPORTANT

Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 4 - Materials: Metals and Non-Metals>Short Answer Type Questions>Q 48

What type of oxides are formed when metals combine with oxygen?