MEDIUM
7th CBSE
IMPORTANT
Earn 100

Which of the following are physical changes?

A. Melting of iron metal

B. Burning of iron filings

C. Rusting of iron metal

D. Drawing a wire of iron metal

50% studentsanswered this correctly

Important Questions on Physical and Chemical Changes

MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 6 - Physical and Chemical Changes>Multiple Choice Questions (MCQs)>Q 38

Which of the following are chemical changes?

A. Decaying of wood 
B. Burning of wood
C. Sawing of wood
D. Hammering of nail into wood

MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 6 - Physical and Chemical Changes>Multiple Choice Questions (MCQs)>Q 39
Which one of the following change can be reversed?
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 6 - Physical and Chemical Changes>Multiple Choice Questions (MCQs)>Q 40
Which of the following is not a physical change?
HARD
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 6 - Physical and Chemical Changes>Multiple Choice Questions (MCQs)>Q 41
When ice-cream melts,
A. Heat is lost from the ice-cream 
B. Heat is gained by the ice-cream 
C. Heat is lost from the surroundings 
D. Heat is gained by the surroundings 
EASY
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 6 - Physical and Chemical Changes>Multiple Choice Questions (MCQs)>Q 42
Which of the following is a chemical change?
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 6 - Physical and Chemical Changes>Multiple Choice Questions (MCQs)>Q 43
One of the following is not a chemical change. This one is:
EASY
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 6 - Physical and Chemical Changes>Multiple Choice Questions (MCQs)>Q 44
Which of the following is not a characteristic of a physical change?
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 6 - Physical and Chemical Changes>Multiple Choice Questions (MCQs)>Q 45
The gas which turns lime water milky is: