MCQ Questions for Class 7 Geography Chapter 4 Air with Answers

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All questions answers in the last paragraph

Q1. What was invented by Anders Celsius?

(A) Barometer
(B) Thermometer
(C) Rain gauge
(D) None of the above

Q2. Which gas is used by the green plants to make their food?

(A) Oxygen
(B) Carbon dioxide
(C) Nitrogen
(D) None of these

Q3. Cold air is __ than hot air

(A) Small and heavy
(B) Less denser and light
(C) Denser and heavy
(D) Small and light

Q4. __ is this hour-to-hour, day to day condition of the atmosphere

(A) Wind
(B) Weather
(C) Season
(D) Climate

Q5. Ionosphere is a part of:

(A) Troposphere
(B) Mesosphere
(C) Thermosphere
(D) Stratosphere

Q6. Green plants use _ to make their food and release

(A) Oxygen, helium
(B) Carbon dioxide, hydrogen
(C) Helium, hydrogen
(D) Carbon dioxide, oxygen

Q7. Pressure is associated with cloudy skies and wet weather and pressure is associated with clear and sunny skies.

(A) Low, Normal
(B) Normal, High
(C) Low, High
(D) High, also High

Q8. Which gas released in the atmosphere creates a greenhouse effect trapping the heat?

(A) Carbon dioxide
(B) Oxygen
(C) Nitrogen
(D) All of these

Q9. The quantity of oxygen in the air is:

(A) 78%
(B) 21%
(C) 15%
(D) 10%

Q10. The air pressure is highest at

(A) Plain level
(B) Plateau level
(C) Sea level
(D) Mountain level

Q11. Which one of the following gases is present in the atmosphere in the highest amount?

(A) Oxygen
(B) Carbon dioxide
(C) Nitrogen
(D) Lithium

Q12. When water evaporates from land and different water bodies, it becomes

(A) Ice
(B) Snow
(C) Rain
(D) Water Vapour

Q13. Our earth is surrounded by a huge blanket of

(A) Sand
(B) Air
(C) Plants
(D) Water

Q14. Which gas creates a greenhouse effect?

(A) Nitrogen
(B) Oxygen
(C) Argon
(D) Carbon dioxide

Q15. What are the important objects for survival of plants and animals?

(A) Rainfall
(B) Sun light
(C) Oxygen
(D) All of these

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