HARD
8th Chhattisgarh Board
IMPORTANT
Earn 100

What difference do you notice on the layer of deposits on the leaves of a neem tree on the roadside and one planted away? What is the effect of these on the biological processes of the plant?

Important Questions on Air

MEDIUM
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 3 - Air>NOW ANSWER THESE>Q 3
Name the gases responsible for the greenhouse effect.
MEDIUM
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 3 - Air>NOW ANSWER THESE>Q 4
Which are the gases mostly present in acid rain? How do they affect our lives?
MEDIUM
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 3 - Air>NOW ANSWER THESE>Q 1
What do you understand by atmospheric pressure?
MEDIUM
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 3 - Air>NOW ANSWER THESE>Q 2
What will happen to the human body if the air pressure of an area suddenly decreases?
EASY
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 3 - Air>QUESTIONS FOR PRACTICE>Q 1
Which gas has highest percentage in air?
MEDIUM
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 3 - Air>QUESTIONS FOR PRACTICE>Q 1
Nitrogen is used in the storage of food items because-
MEDIUM
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 3 - Air>QUESTIONS FOR PRACTICE>Q 1
Unit measure of atmospheric pressure is equal to the column of mercury pressure of-
MEDIUM
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 3 - Air>QUESTIONS FOR PRACTICE>Q 1
Oxygen gas as compared to water is-