EASY
8th Kerala Board
IMPORTANT
Earn 100

When equal quantity of water and coconut oil are heated which of the two temperatures reaches a higher value in a specified time?

Important Questions on Water

MEDIUM
8th Kerala Board
IMPORTANT
Science for Class 8 - Part 2>Chapter 5 - Water>Exercise 4
Normally, all substances shrink on cooling and their volume decreases. This increases its density, if that is the case ice should sink in water. But does it happen? Find out?
MEDIUM
8th Kerala Board
IMPORTANT
Science for Class 8 - Part 2>Chapter 5 - Water>Exercise 4
When water freezes to ice, does it expand or shrink?
MEDIUM
8th Kerala Board
IMPORTANT
Science for Class 8 - Part 2>Chapter 5 - Water>Exercise 5
Discuss the difficulties of washing clothes using hard water.
EASY
8th Kerala Board
IMPORTANT
Science for Class 8 - Part 2>Chapter 5 - Water>Exercise 6
Which gas do creatures use for breathing? 
EASY
8th Kerala Board
IMPORTANT
Science for Class 8 - Part 2>Chapter 5 - Water>Exercise 6
Which gas is used by plants to produce food?
EASY
8th Kerala Board
IMPORTANT
Science for Class 8 - Part 2>Chapter 5 - Water>Exercise 6
How do aquatic creatures and aquatic plants get gases?
EASY
8th Kerala Board
IMPORTANT
Science for Class 8 - Part 2>Chapter 5 - Water>Exercise 6
Why is air continuously introduced into the water in an aquarium?
MEDIUM
8th Kerala Board
IMPORTANT
Science for Class 8 - Part 2>Chapter 5 - Water>Exercise 6
How do the fishes in an aquarium get oxygen to breathe?