HARD
7th CBSE
IMPORTANT
Earn 100

Sodium chloride salt is used for cooking. It is formed when hydrochloric acid is added to sodium hydroxide solution, both of which are corrosive in nature. But sodium chloride is not. Give reasons.

Important Questions on Test Papers

MEDIUM
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 19 - Test Papers>SAMPLE TEST PAPER FOR SUMMATIVE ASSESSMENT>Q C
In how many temperature zones is the world divided based on the difference in their climate? Explain each.
HARD
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 19 - Test Papers>SAMPLE TEST PAPER FOR SUMMATIVE ASSESSMENT>Q C
How can soil erosion be prevented?
HARD
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 19 - Test Papers>SAMPLE TEST PAPER FOR SUMMATIVE ASSESSMENT>Q C
Differentiate between breathing and cellular respiration.
MEDIUM
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 19 - Test Papers>SAMPLE TEST PAPER FOR SUMMATIVE ASSESSMENT>Q C
What will happen to life on earth in the absence of photosynthesis?
HARD
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 19 - Test Papers>SAMPLE TEST PAPER FOR SUMMATIVE ASSESSMENT>Q C
Differentiate between digestion in humans and ruminants?
HARD
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 19 - Test Papers>SAMPLE TEST PAPER FOR SUMMATIVE ASSESSMENT>Q C
How do silkworms spin cocoons?
MEDIUM
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 19 - Test Papers>SAMPLE TEST PAPER FOR SUMMATIVE ASSESSMENT>Q D
The end products of respiration are
MEDIUM
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 19 - Test Papers>SAMPLE TEST PAPER FOR SUMMATIVE ASSESSMENT>Q D
Carbon dioxide is taken in from the atmosphere by the plants through