Air Around Us-Composition of Air [CBSE (Central Board of Secondary Education) Class-6 Science]: Questions 1 - 7 of 10
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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▾
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 3
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 |
Question 4
Question MCQ▾
Gas used in fire extinguishers is:
Choices
Choice (4) | Response | |
---|---|---|
a. | Oxygen | |
b. | Carbon-dioxide | |
c. | Nitrogen | |
d. | Question does not provide sufficient data or is vague |
Question 5
Question MCQ▾
Why the traffic policeman wears mask?
Choices
Choice (4) | Response | |
---|---|---|
a. | To protect themselves from UV rays | |
b. | To protect themselves from smoke | |
c. | To protect themselves from sun rays | |
d. | None of the above |
Question 6
Question MCQ▾
Supporter of combustion is:
Choices
Choice (4) | Response | |
---|---|---|
a. | Carbon-dioxide | |
b. | Oxygen | |
c. | None of the above | |
d. | Question does not provide sufficient data or is vague |
Question 7
Question MCQ▾
The gas which is used in respiration to break down the food to give energy is:
Choices
Choice (4) | Response | |
---|---|---|
a. | Oxygen | |
b. | Nitrogen | |
c. | Carbon-dioxide | |
d. | Question does not provide sufficient data or is vague |