Class 6 Science MCQ Chapter 15 Air Around Us Solutions, SEBA Class 6 Science MCQ Chapter 15 Air Around Us Notes to each chapter is provided in the list so that you can easily browse throughout different chapter Assam Board Class 6 General Science Multiple Choice Question Answer and select needs one.
Class 6 Science MCQ Chapter 15 Air Around Us
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Air Around Us
Chapter – 15
| MCQ |
1. The layer of air around the earth is known as?
(a) Windmill.
(b) Atmosphere.
(c) Troposphere.
(d) Carbon dioxide.
Ans: (b) Atmosphere.
2. Air in motion is called?
(a) Space.
(b) Oxygen.
(c) Wind.
(d) Smoke.
Ans: (c) Wind.
3. The component of air used by green plants to make their food is?
(a) Carbon dioxide.
(b) Oxygen.
(c) Nitrogen.
(d) Aragon.
Ans: (a) Carbon dioxide.
4. Aquatic animals use dissolved air in water for?
(a) Carbon dioxide.
(b) Photosynthesis.
(c) Windmill.
(d) Respiration.
Ans: (d) Respiration.
5. Which gas in the atmosphere is essential for respiration?
(a) Nitrogen.
(b) Carbon dioxide.
(c) Oxygen.
(d) No one of these.
Ans: (c) Oxygen.
6. What are the properties of air?
(a) If occupies space.
(b) It is present everywhere around us.
(c) It has no color and is transparent.
(d) All of these.
Ans: (d) All of these.
7. Moving air is called?
(a) Dust.
(b) Smoke.
(b) Wind.
(c) Nitrogen.
Ans: (c) Wind.
8. Which components of air are harmful to living organisms?
(a) Gas and water.
(b) Oxygen and nitrogen.
(c) Dust and smoke.
(d) Nitrogen and phosphorus.
Ans: (c) Dust and smoke.
9. Air is present in?
(a) Atmosphere.
(b) Water.
(c) Soil.
(d) All of these.
Ans: (d) All of these.
10. From the following, which gas is used for breathing?
(a) Nitrogen.
(b) Oxygen.
(c) Carbon dioxide.
(d) All of these.
Ans: (b) Oxygen.
11. Air is considered to be?
(a) A mixture.
(b) oxygen.
(c) A nitrogen.
(d) No one of these.
Ans: (a) A mixture.
12. Smoke is produced mainly by burning?
(a) Wood.
(b) Kerosene.
(c) Coal.
(d) All of these.
Ans: (d) All of these.
13. Plants and animals consume oxygen for respiration and produce?
(a) Nitrogen.
(b) Carbon dioxide.
(c) Smoke.
(d) Air.
Ans: (b) carbon dioxide.
14. Process of preparation of food by green plants is known as?
(a) Photosynthesis.
(b) Respiration.
(c) Atmosphere.
(d) Carbon dioxide.
Ans: (a) Photosynthesis.
15. One of the components of air used to manufacture fertilisers on a large scale is?
(a) Oxygen.
(b) Carbon dioxide.
(c) Nitrogen.
(d) All of these.
Ans: (c) Nitrogen.
16. Mountainers carry oxygen cylinder with them because?
(a) There is a deficiency of oxygen on mountain.
(b) There is sufficiency of oxygen on mountain.
(c) Of a mixture.
(d) No one of these.
Ans: (a) There is a deficiency of oxygen on mountain.
17. Gas that is commonly used in fire extinguishers is?
(a) Nitrogen.
(b) Carbon dioxide.
(c) Oxygen.
(d) All of these.
Ans: (b) carbon dioxide.
18. The major part of air is?
(a) Oxygen..
(b) Nitrogen.
(c) Carbon dioxide.
(d) No one of these.
Ans: (b) Nitrogen.
19. Nitrogen, oxygen, Carbon dioxide, water vapour, dust and smoke are?
(a) Composition of gas.
(b) Composition of water.
(c) Composition of air.
(d) All of these.
Ans: (c) Composition of air.
20. Which of the following is variable component of air?
(a) Nitrogen.
(b) Water vapour.
(c) Smoke.
(d) Oxygen.
Ans: (b) Water vapour.
