Class 6 Science Chapter 15 MCQ (Multiple Choice Questions) of Air Around Us. All the MCQ are taken from important topics given in NCERT Book’s Chapters of class 6 Science chapter 15. Class 6 Science extra questions are helpful for the preparation of school unit tests and periodic exams. Revise the complete chapter using these MCQ objective questions and get confident in exams.

Class 6 Science Chapter 15 MCQ Online Test for 2022-2023

Class: 6Science
Chapter: 15Air Around Us
Contents:MCQ Online Test with Answers

Class 6 Science Chapter 15 MCQ Test with Answers

Q1

The earthworms come out of the soil only during:

[A]. Very cold weather
[B]. Very hot weather
[C]. Very heavy rains
[D]. Very little rains
Q2

Which of the following statement is or are correct?

[A]. Nitrogen gas is not essential for breathing or respiration.
[B]. All the living things need nitrogen compounds for their growth.
[C]. Nitrogen is needed by plants to make proteins.
[D]. All the above
Q3

Consider the following statements and choose the incorrect one:

[A]. Oxygen gas is essential for breathing or respiration.
[B]. Oxygen or air is not necessary for the purpose of burning or combustion of fuels.
[C]. The animals and plants living on land take the oxygen required for breathing from the air around them.
[D]. The animals and plants living in water take the oxygen required for breathing from the air dissolved in water.
Q4

What is not true about air?

[A]. It makes the windmill rotate
[B]. It helps in the movement of aeroplanes
[C]. Birds can fly due to presence of air
[D]. It has no role in water cycle
Q5

State which of the following statements are incorrect:

[A]. Plants consume oxygen for respiration.
[B]. Plants produce oxygen during the process of making their own food.
[C]. Air helps in the movements of sailing yachts and glider but plays no role in the flight of birds and aeroplanes.
[D]. Air does occupy space.
Q6

Shreya is completed her science chapter where she wrote some statements. She wants to know whether the statements are correct or not? Shreya wants to take help from you:

[A]. Smoke is produced by the burning of fuels.
[B]. The tall chimneys in factories are installed to take the smoke produced in the factory high up in the air.
[C]. The traffic policemen wear masks to protect themselves from the smoke containing harmful gases.
[D]. We should breathe in air or inhale air through our mouth.
Q7

David appeared in class test but he confused to know the correct statement. Would you help him to know that?

[A]. Air is used by human beings for breathing and respiration.
[B]. Air is used for burning fuels (like wood, coal and kerosene etc.) to make fire.
[C]. Compressed air is used to fill tyres of various kinds of vehicles.
[D]. All the above
Q8

In a quiz competition, you are asked a question where you have to choose the statement which is/ are incorrect?

[A]. Air do not help in the dispersal of seeds and pollen of flowers of several plants.
[B]. Air has no role for burning of phosphorus.
[C]. Air has no role for flying aeroplanes and helicopters.
[D]. All the above.
Q9

In the last year board examination, Rahul were asked a question where he had to choose the statement which was/were correct? Will you be able to answer this question?

[A]. The oxygen of air being consumed by animals in the respiration and in the burning of fuels is constantly being replaced by plants through the process of photosynthesis.
[B]. Animal depends on plants for getting oxygen gas and plants depend on animals for getting carbon dioxide gas.
[C]. The plants and animals help in maintaining the balance of oxygen and carbon dioxide gases in atmosphere.
[D]. All the above.
Q10

Which of the following components of air is present in the largest amount in the atmosphere?

[A]. Nitrogen
[B]. Oxygen
[C]. Water vapour
[D]. Carbon dioxide
Q11

Which of the following statement is or are correct?

[A]. The person who climb high mountains are called mountaineers.
[B]. The mountaineers carry oxygen gas cylinder with them while climbing high mountains.
[C]. If the clothes of a person catch fire woolen blanket is put around the burning clothes to extinguish the fire.
[D]. All the above
Q12

Wind does not help in the movement of which of the following?

[A]. Firki
[B]. Weather cock
[C]. Celling fan
[D]. Sailing yacht
Q13

Consider the following statements and choose the incorrect one:

[A]. Air is a mixture of many gases.
[B]. Nitrogen and oxygen gases taken together make up about 99% of air.
[C]. The envelope of air that surrounds the earth is called atmosphere.
[D]. The composition of air is always exactly the same.
Q14

Usha took a lump of dry soil in a glass and added water to it till it was completely immersed. She observed bubbles coming out. The bubbles contain:

[A]. Water vapour
[B]. Only oxygen gas
[C]. Air
[D]. None of the above
Q15

The two gases which, taken together, make up about 99% of air:

[A]. Nitrogen and carbon dioxide
[B]. Nitrogen and Ozone
[C]. Carbon dioxide and oxygen
[D]. Nitrogen and oxygen
Q16

The components of air which is utilized by the plants in respiration is:

[A]. Nitrogen
[B]. Carbon dioxide
[C]. Oxygen
[D]. Water vapour
Q17

In an activity to show that air is mainly a mixture of two gases (nitrogen and oxygen), the carbon dioxide produced by the burning of candle in air is absorbed by dissolving a substance X in water in the trough. The substance X is:

[A]. Washing soda
[B]. Baking soda
[C]. Caustic soda
[D]. Soda water
Q18

About one-fifth of ordinary air is:

[A]. Nitrogen
[B]. Carbon dioxide
[C]. Water vapour
[D]. Oxygen
Q19

Air is considered to be:

[A]. A compound
[B]. A mixture
[C]. A solvent
[D]. An element
Q20

The air over industrial cities has usually higher amount of one of the following components than normal air. This is:

[A]. Oxygen
[B]. Argon
[C]. Carbon dioxide
[D]. Nitrogen
Q21

The crop plants do not depend on humans for obtaining one of the following. This one is:

[A]. Fertilizers
[B]. Oxygen
[C]. Carbon dioxide
[D]. Irrigation
Q22

Which of the following is not a common component of air that we normally breathe in?

[A]. Oxygen
[B]. Water vapour
[C]. Carbon monoxide
[D]. Nitrogen
Q23

If we try to immerse an empty glass in a water container vessel (glass mouth towards bottom side but not touched the bottom), how will some air be release from that glass?

[A]. Pour more water into the basin.
[B]. Blow bubbles into the class.
[C]. Tilt the glass
[D]. Push the glass further down
Q24

How can we find out that there is air in a sponge?

[A]. Squeeze the sponge in air
[B]. Pour water into the sponge
[C]. Blow some air into the sponge
[D]. Squeeze the sponge in water
Q25

If the clothes of a person catch fire while working in the kitchen, which of the following should be used to cover the burning clothes of a person so as to extinguish fire?

[A]. Nylon blanket
[B]. Woolen blanket
[C]. Terylene blanket
[D]. Polythene sheet

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