MEDIUM
6th CBSE
IMPORTANT
Earn 100

Which of the following is called dry ice? 

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Important Questions on Air Around Us

MEDIUM
6th CBSE
IMPORTANT
Science Based on the Rationalised NCERT Content>Chapter 11 - Air Around Us>Exercises>Q 7
The quantity of which of the following component in the air varies from place to place?
MEDIUM
6th CBSE
IMPORTANT
Science Based on the Rationalised NCERT Content>Chapter 11 - Air Around Us>Exercises>Q 8

Which option correctly matches the given columns? 

Column I Column II
A. Moisture content in the air (i) CO2
B. Troposphere (ii) 4:1
C. Chemical formula of carbon dioxide (iii) Atmospheric air
D. Nitrogen : Oxygen ratio (iv) Humidity

 

MEDIUM
6th CBSE
IMPORTANT
Science Based on the Rationalised NCERT Content>Chapter 11 - Air Around Us>Exercises>Q 1
Air is a _____ mainly containing oxygen, nitrogen and argon.
MEDIUM
6th CBSE
IMPORTANT
Science Based on the Rationalised NCERT Content>Chapter 11 - Air Around Us>Exercises>Q 1
Nitrogen to oxygen ratio in the air is 1 : 4.
MEDIUM
6th CBSE
IMPORTANT
Science Based on the Rationalised NCERT Content>Chapter 11 - Air Around Us>Exercises>Q 2
Burning of fossil fuels is one of the major sources of atmospheric oxygen.
EASY
6th CBSE
IMPORTANT
Science Based on the Rationalised NCERT Content>Chapter 11 - Air Around Us>Exercises>Q 3
Wind energy can be used for generating electricity using windmills.
EASY
6th CBSE
IMPORTANT
Science Based on the Rationalised NCERT Content>Chapter 11 - Air Around Us>Exercises>Q 4
During photosynthesis, plants make carbohydrates from carbon dioxide and water.
EASY
6th CBSE
IMPORTANT
Science Based on the Rationalised NCERT Content>Chapter 11 - Air Around Us>Exercises>Q 5
Fish get the needed oxygen through their gills.