Assignment for Air Around Us 1 Questions and Answers Paper (For CBSE, ICSE, IAS, NET, NRA 2023)
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Question 1
State True or False
(a) Nitrogen supports burning of a candle
(b) Dust particles are always present in air
(c) Water Vapour present in Air supports the water cycle
(d) Birds, insect can fly because of the air
(e) Plants absorb oxygen to prepare the food
(f) Air is primary made of Hydrogen and Helium
Answer:
a) False
b) True
c) True
d) True
e) False
f) False
Question2
Fill in the Blank
1. The process of absorbing carbon dioxide from air and preparing the food by plants is called …
2. Air is … and not …
3. The layer of gases around the earth is called as …
4. Air occupies … and has …
5. Organism living in soil breathe through …
6. Air is primary made of … and …
7. Removal of water from plant bodies in the form of vapors is called …
8. Clothes dry faster when there is … water vapour in air
Answer:
1) Photosynthesis
2) Odourless, not visible
3) Atmosphere
4) Space, Weight
5) Air present in soil
6) Nitrogen, oxygen
7) Transpiration
8) Less
Question 3:
Match the following
Column A | Column B |
Oxygen is required | Ammonia |
Nitrogen is used to prepare | Photosynthesis |
Co2 is used in | Electric Bulb |
Argon is used | Combustion |
Water Vapour | Low temperature |
Helium | Water cycle |
Answer:
Column A | Column B |
Oxygen is required | combustion Ammonia |
Nitrogen is used to prepare | Ammonia |
Co2 is used in | photosynthesis |
Argon is used | Electric Bulb |
Water Vapour | Water cycle |
Helium | Low temperature |
Question 4
Crossword
Across
2 This gas is used for treating cancer patient
3 The blanket of gases that surrounds the earth
4 These animals use air dissolved in water for respiration
5 It is colourless and odour less
7 The gas which helps in combustion
8 This process involves utilization of carbon dioxide from air and release of oxygen into the air.
Down
1 The major part in air
2 Air is used by animals for this process
6 The device used to convert wind energy into electrical energy
Answer:
1) Atmosphere
2) Nitrogen
3) Oxygen
4) Windmill
5) Photosynthesis
6) Air
7) Radon
8) Aquatic
9) Respiration