Importance Of Air-Multiple Choice Questions Quiz

Interactive MCQs on “Importance Of Air”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: What is the approximate composition of air?

(a) 78% nitrogen, 21% oxygen, 1% carbon dioxide
(b) 50% nitrogen, 50% oxygen
(c) 90% oxygen, 10% carbon dioxide
(d) 70% nitrogen, 30% oxygen

Question 2: What is the main function of oxygen in the air?

(a) To support combustion and respiration
(b) To prevent corrosion
(c) To provide color and odor to the atmosphere
(d) To regulate atmospheric pressure

Question 3: Which gas is responsible for the greenhouse effect and helps regulate Earth's temperature?

(a) Nitrogen
(b) Oxygen
(c) Carbon dioxide
(d) Argon

Question 4: How does air help in the distribution of heat on Earth?

(a) By reflecting sunlight
(b) By absorbing heat energy
(c) By convection currents and wind movement
(d) By blocking infrared radiation

Question 5: Which component of air is essential for nitrogen-fixing bacteria and plant growth?

(a) Oxygen
(b) Carbon dioxide
(c) Nitrogen
(d) Hydrogen

Question 6: How does air contribute to water cycle processes like evaporation and precipitation?

(a) Air absorbs sunlight directly
(b) Air contains water vapor that condenses to form clouds
(c) Air generates earthquakes and tsunamis
(d) Air traps heat underground

Question 7: What is the significance of air in protecting living organisms from harmful solar radiation?

(a) Air generates protective force fields
(b) Air absorbs and scatters harmful ultraviolet (UV) radiation
(c) Air releases harmful radiation
(d) Air prevents water cycle processes

Question 8: How does air help in pollination of plants?

(a) Air generates wind to carry pollen
(b) Air releases fragrances to attract pollinators
(c) Air generates heat to attract insects
(d) Air generates sound to attract birds

Question 9: What role does air play in maintaining pressure on Earth's surface?

(a) Air prevents objects from floating
(b) Air causes atmospheric turbulence
(c) Air generates gravitational forces
(d) Air exerts atmospheric pressure

Question 10: How does air contribute to sound transmission?

(a) Air absorbs sound waves
(b) Air refracts sound waves
(c) Air amplifies sound waves
(d) Air emits sound waves