HARD
7th CBSE
IMPORTANT
Earn 100

What happens when an iron nail is kept immersed in copper sulphate solution? Write a word equation for the process. Name the type of change involved.

Important Questions on Physical and Chemical Changes

HARD
7th CBSE
IMPORTANT
Frank Experience Science>Chapter 6 - Physical and Chemical Changes>Exercises>Higher Order Thinking Skills
The gas used to cook food in the kitchen is called liquefied petroleum gas (LPG). In the cylinder it exists as liquid. When it comes out of the cylinder, it becomes a gas (change-P), then it burns (change-Q). Think about the change; P and Q. Are they both physical or chemical changes? Give reason in support of your answer.
HARD
7th CBSE
IMPORTANT
Frank Experience Science>Chapter 6 - Physical and Chemical Changes>Exercises>Values and Life Skills
Gautam's father has got the iron gate and iron grills of his house painted. What do you think is the reason behind this?