Air Around Us [CBSE (Central Board of Secondary Education) Class-6 Science]: Questions 1 - 6 of 19
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Question 1
Question MCQ▾
Sources of dust particles present in the air are:
Choices
Choice (4) | Response | |
---|---|---|
a. | Construction activities and agricultural practices AND Blowing of wind | |
b. | Traffic on the road | |
c. | Dusting at home, earth moving operations | |
d. | All a., b. and c. are correct |
Question 2
Question MCQ▾
A lump of cotton wool shrink when put in water:
Choices
Choice (4) | Response | |
---|---|---|
a. | Because it is light in weight | |
b. | Because it contains a lot of air in large spaces between its fibres | |
c. | Because it is white in colour | |
d. | All of the above |
Question 3
Question MCQ▾
The gas which helps to keep the earth warm is:
Choices
Choice (4) | Response | |
---|---|---|
a. | Oxygen | |
b. | Nitrogen | |
c. | Carbon-dioxide | |
d. | None of the above |
Question 4
Question MCQ▾
Aquatic animals and aquatic plants takes oxygen from air dissolved in:
Choices
Choice (4) | Response | |
---|---|---|
a. | Water | |
b. | Salt | |
c. | Question does not provide sufficient data or is vague | |
d. | All of the above |
Question 5
Question MCQ▾
Uses of air are:
Choices
Choice (4) | Response | |
---|---|---|
a. | Compressed air is used to fill tyres AND Dispersal of seeds and pollen | |
b. | For burning fuels | |
c. | Used by human beings for breathing | |
d. | All a., b. and c. are correct |
Question 6
Question MCQ▾
The amount of water vapour present in the air is known as:
Choices
Choice (4) | Response | |
---|---|---|
a. | Transpiration | |
b. | Evaporation | |
c. | Humidity | |
d. | Moisture |