Class 6 Science Chapter 15 MCQ

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 2021-2022

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

Mountaineers carry oxygen cylinders with them because:

[A]. There is no oxygen on high mountains
[B]. There is deficiency of oxygen on mountains at higher altitude
[C]. Oxygen is used for cooking
[D]. Oxygen keeps them warm at low temperature
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

Priya is writing some statements, choose the correct statement and help him:

[A]. When a burning candle is covered with a gas jar, the supply of oxygen of fresh air is cut off and it stops burning.
[B]. When the burning clothes of a person are covered with woolen blanket, then the supply of fresh air is cut off and hence the clothes stops burning.
[C]. Oxygen gas is given to patient in hospitals who gave have difficulty in breathing properly.
[D]. All the above




Q6

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
Q7

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.
Q8

The components of air which are harmful to living beings are:

[A]. Nitrogen and carbon dioxide
[B]. Dust and water vapour
[C]. Dust and smoke
[D]. Smoke and water vapour
Q9

Recently, in a science class test, you are asked a question where you have to say whether the statements are correct or not?

[A]. Blowing air, called wind, is used to turn the blades of windmills.
[B]. Air helps in the movement of yachts or sailing boats, parachutes, gliders and aeroplanes.
[C]. Air helps the birds, bats and insects in flying.
[D]. Air do not play an important role in the water cycle.
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

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

[A]. Air is a mixture of several two gases.
[B]. No living things can survive without air.
[C]. Moving air is called wind.
[D]. It is the moving air or blowing air which makes a phirki rotate.




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

While deep under the sea, a deep-sea diver cannot utilize the oxygen dissolved in sea water for breathing because he does not have:

[A]. Thin skin
[B]. Gills
[C]. Stomata
[D]. Breathing tubes
Q19

Nitrogen is needed by the plants to make:

[A]. Fats
[B]. Carbohydrates
[C]. Proteins
[D]. Minerals
Q20

Air is considered to be:

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



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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