MCQ Questions for Class 6 Science Chapter 15 Air Around Us
Solving the Air Around Us Multiple Choice Questions of class 6 Science Chapter 15 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Air Around Us class 6 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 15 Science class 6 and cross-check your answers during preparation.
Question 1.
What do plant and animal matter produce on burning ?
(a) Carbon dioxide
(b) Few other gases
(c) Both (a) and (b)
(d) None of these
Answer
(c) Both (a) and (b)
Plant and animal matter produces carbon dioxide and few other gases on burning.
Question 2.
What do plant animal matter consume on burning ?
(a) Carbon dioxide
(b) Oxygen
(c) Nitrogen
(d) None of these
Answer
(b) Oxygen
Plant and animal matter consume oxygen on burning.
Question 3.
contains few gases and fire dust particle.
(a) Wind
(b) Vapour
(c) Atmosphere
(d) Smoke
Answer
(d) Smoke
Smoke contains few gases and fire dust particles.
Question 4.
Mountaineers carry cylinders with them.
(a) Carbon dioxide
(b) Nitrogen
(c) Water
(d) Oxygen
Answer
(d) Oxygen
Mountaineers carry oxygen cylinders with them.
Question 5.
The properties of air are:
(a) It has no colour
(b) It occupies space
(c) It is transparent
(d) All of these
Answer
(d) All of these
Air has no colour and transparent and it occupies space.
Question 6.
When the bottle was tilted, the air was able to come out in the form of.
(a) Gas
(b) Smoke
(c) Vapour
(d) Bubbles
Answer
(d) Bubbles
When the bottle was tilted, the air was able to come out in the form bubbles.
Question 7.
What is the percentage of nitrogen and oxygen in air ?
(a) 98%
(b) 99%
(c) 97%
(d) 100%
Answer
(b) 99%
Nitrogen and oxygen is 99% in air.
Question 8.
What is percentage of carbon dioxide and few other gases, water vapour, dust particles ?
(a) 2%
(b) 1%
(c) 3%
(d) None of these
Answer
(b) 1%
Carbon dioxide and few other gases is 1% in air.
Question 9.
Which component of air is used by green plants to make their food ?
(a) Oxygen
(b) Nitrogen
(c) Carbon dioxide
(d) None of these
Answer
(c) Carbon dioxide
Carbon dioxide is used by green plants to make their food.
Question 10.
Which gas in the atmosphere is essential for respiration ?
(a) Oxygen
(b) Nitrogen
(c) Carbon dioxide
(d) None of these
Answer
(a) Oxygen
Oxygen is essential for respiration in atmosphere.
Question 11.
The envelope of air that surrounds the earth is known as:
(a) Air
(b) Wind
(c) Atmosphere
(d) None of these
Answer
(c) Atmosphere
The envelope of air that surrounds the earth is known as atmosphere.
Question 12.
Air in motion is called:
(a) Air
(b) Wind
(c) Atmosphere
(d) None of these
Answer
(b) Wind
Air in motion is called wind.
Question 13.
Nitrogen, oxygen, carbon dioxide, water vapour and a few gases are:
(a) Wind
(b) Components of air
(c) Atmosphere
(d) None of these
Answer
(b) Components of air
Nitrogen, oxygen, carbon dioxide, water vapour and few other gases are components of air.
Question 14.
What makes a firki rotate ?
(a) Atmosphere
(b) Moving air
(c) Water vapour
(d) None of these
Answer
(b) Moving air
Moving air rotates firki.
Question 15.
During storms the wind blows at a very.
(a) Medium speed
(b) High speed
(c) Low speed
(d) None of these
Answer
(b) High speed
During storms the wind blows at a very high speed.
Question 16.
Burning occurs in the presence of which gas ?
(a) Oxygen
(b) Nitrogen
(c) Carbon dioxide
(d) Water vapour
Answer
(a) Oxygen
Burning occurs in the presence of oxygen gas.
Question 17.
Why do plants and animals consume oxygen ?
(a) Transpiration
(b) Evaporation
(c) Respiration
(d) Condensation
Answer
(c) Respiration
Plant’s and animals consume oxygen for respiration.
Question 18.
The burning of fuel also produces
(a) Air
(b) Fire
(c) Smoke
(d) None of these
Answer
(c) Smoke
The burning of fuel also produces smoke.
Question 19.
Why do we feel suffocation if some material is burning in a closed room ?
(a) Due to excess of carbon-dioxide
(b) Due to excess of oxygen
(c) Due to excess of water vapour
(d) Due to excess of nitrogen
Answer
(a) Due to excess of carbon-dioxide
We feel suffocation due to excess of carbon dioxide in closed room.
State whether the statements are True or False:
Question 1.
Wind is the envelope of air surrounding the earth.
Answer
False
Question 2.
Atmosphere shows the direction in which the air is moving at that place.
Answer
False
Question 3.
Carbon dioxide is used by green plants to make their own food.
Answer
True
Question 4.
Fuels are able to burn due to presence of air.
Answer
True
Question 5.
Air present in lump of cotton wool gets dissolved in water and hence it shrinks.
Answer
True
Question 6.
Animal living in water get oxygen which is dissolved in water.
Answer
True
Question 7.
During storms the wind blows at a low speed.
Answer
False
Question 8.
Moving air rotates firki.
Answer
True
Question 9.
We can see air, we cannot feel it.
Answer
False
Question 10.
Nitrogen, oxygen, carbon dioxide, water vapour and a few other gases are components of air.
Answer
True
Fill in the blanks:
Question 1.
…………….. from burrows and holes deep in the soil.
Answer
Earth worms
Question 2.
During …………….. plants make their own food and oxygen is produced.
Answer
photosynthesis
Question 3.
…………….. cannot live without plants.
Answer
animals
Question 4.
Oxygen become available to animals and plants living in soil from the air present in ……………..
Answer
soil
Question 5.
Birds, bats and insects can fly due to the presence of ……………..
Answer
air
Question 6.
The layer of air around the earth is known as ……………..
Answer
atmosphere
Question 7.
The wind makes the ………….. rotate.
Answer
windmill
Question 8.
Air plays an important role in ……………..
Answer
water cycle
Question 9.
Plants and animals help each other in the exchange of …………….. in atmosphere.
Answer
gases
Question 10.
…………….. through mouth is harmful because harmful dust particles enter our body.
Answer
Breathing
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