MEDIUM
8th CBSE
IMPORTANT
Earn 100

What happens when the following non-metal react with oxygen (write chemical equation)?

(a) carbon

Important Questions on Materials: Metals and Non-Metals

MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 4 - Materials: Metals and Non-Metals>Exercise>Q 3

What happens when the following non-metal react with oxygen (write chemical equation)?

(b) phosphorus

EASY
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 4 - Materials: Metals and Non-Metals>Exercise>Q 3

What happens when the following non-metal react with oxygen (write chemical equation)?

(c) sulphur

MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 4 - Materials: Metals and Non-Metals>Exercise>Q 5
Which non-metal is used to disinfect water?
MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 4 - Materials: Metals and Non-Metals>Exercise>Q 6

Which of the following elements would form acidic oxides?

(a) carbon (b) magnesium (c) sulphur (d) zinc (e) iron

HARD
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 4 - Materials: Metals and Non-Metals>Exercise>Q 1
State any five physical properties on the basis of which metals can be distinguished from non-metals.
MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 4 - Materials: Metals and Non-Metals>Exercise>Q 2
Wires cannot be drawn from materials such as stone or wood. Why?
EASY
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 4 - Materials: Metals and Non-Metals>Exercise>Q 2

Give reason for the following:

Oxygen is not brittle.

MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 4 - Materials: Metals and Non-Metals>Exercise>Q 2

Give reason for the following:

Sulphur cannot be used for making pipes.