EASY
7th CBSE
IMPORTANT
Earn 100

The reaction between baking soda and vinegar is a chemical change.

50% studentsanswered this correctly

Important Questions on Physical and Chemical Changes

MEDIUM
7th CBSE
IMPORTANT
Frank Experience Science>Chapter 6 - Physical and Chemical Changes>Exercises>Q 5
Rust is actually magnesium oxide.
MEDIUM
7th CBSE
IMPORTANT
Frank Experience Science>Chapter 6 - Physical and Chemical Changes>Exercises>Q 1
What is galvanisation?
EASY
7th CBSE
IMPORTANT
Frank Experience Science>Chapter 6 - Physical and Chemical Changes>Exercises>Q 2
Name the process by which we get pure substance such as common salt.
MEDIUM
7th CBSE
IMPORTANT
Frank Experience Science>Chapter 6 - Physical and Chemical Changes>Exercises>Q 3
What type of change is taking place during the rusting of iron?
HARD
7th CBSE
IMPORTANT
Frank Experience Science>Chapter 6 - Physical and Chemical Changes>Exercises>Q 4
List the processes which protect iron objects from rusting.
HARD
7th CBSE
IMPORTANT
Frank Experience Science>Chapter 6 - Physical and Chemical Changes>Exercises>Q 5
How does painting prevent iron objects from rusting?
EASY
7th CBSE
IMPORTANT
Frank Experience Science>Chapter 6 - Physical and Chemical Changes>Exercises>Q 1
What are physical and chemical changes?
HARD
7th CBSE
IMPORTANT
Frank Experience Science>Chapter 6 - Physical and Chemical Changes>Exercises>Q 2
What are exothermic and endothermic reactions? Give examples.