EASY
7th CBSE
IMPORTANT
Earn 100

Meeta saw that the volume of perfume in her bottle had become less after a few days. Probably the perfume had evaporated. Is the evaporation of perfume a physical change or a chemical change?

Important Questions on Changes Around Us

MEDIUM
7th CBSE
IMPORTANT
SCIENCE ROUTE 7>Chapter 9 - Changes Around Us>EXERCISES>Q I
Formation of gas bubbles is a _____ change.
EASY
7th CBSE
IMPORTANT
SCIENCE ROUTE 7>Chapter 9 - Changes Around Us>EXERCISES>Q I
Turning milk into curd is 
EASY
7th CBSE
IMPORTANT
SCIENCE ROUTE 7>Chapter 9 - Changes Around Us>EXERCISES>Q I
One of the following is not a physical property of a substance.
MEDIUM
7th CBSE
IMPORTANT
SCIENCE ROUTE 7>Chapter 9 - Changes Around Us>EXERCISES>Q I
The new substance formed by mixing metals and non-metals is called a/an
EASY
7th CBSE
IMPORTANT
SCIENCE ROUTE 7>Chapter 9 - Changes Around Us>EXERCISES>Q I
Which one of the following is a chemical reaction?
EASY
7th CBSE
IMPORTANT
SCIENCE ROUTE 7>Chapter 9 - Changes Around Us>EXERCISES>Q I
Which of the following is a physical change?
MEDIUM
7th CBSE
IMPORTANT
SCIENCE ROUTE 7>Chapter 9 - Changes Around Us>EXERCISES>Q I
Which of the following is a chemical change?
MEDIUM
7th CBSE
IMPORTANT
SCIENCE ROUTE 7>Chapter 9 - Changes Around Us>EXERCISES>Q I
Rust is formed when iron reacts with water and