AIR AND ATMOSPHERE MASTRY QUIZ

Air & Atmosphere Mastery Quiz

Complete Exercise 5.1 Challenge 

(Questions 1 - 20)

Part 1: Section D Concepts

1. What is the approximate ratio of oxygen to nitrogen by volume in the air?

A) 4 : 1 B) 1 : 1 C) 1 : 4 D) 2 : 3

2. Which material is identified as a common household fuel in rural India?

A) Coal B) Biomass C) Petroleum D) Natural Gas

3. What are the actual requirements (raw materials) for combustion to occur?

A) Carbon dioxide and water B) Nitrogen and Heat C) Fuel and Oxygen D) Carbon dioxide and Nitrogen

4. How is coal primarily classified based on its use? A) Household fuel

B) Aviation fuel C) Industrial fuel D) Non-combustible material

5. What is the role of nitrogen regarding combustion?

A) It acts as the primary fuel. B) It helps in the process of combustion. C) It does not help in burning and dilutes oxygen's activity. D) It is a product of combustion.

Part 2: Section E Concepts

6. The atmosphere is best defined as:

A) Air found only above land masses. B) Air found only above oceans. C) The air found immediately around us. D) The envelope of air surrounding the earth.

7. Which constituent of air is essential for the process of combustion?

A) Nitrogen B) Carbon dioxide C) Oxygen D) Helium

8. Which of these gases is most commonly used as a household fuel?

A) CNG B) LPG (Liquefied Petroleum Gas) C) Oxygen D) Nitrogen

9. What is the correct approximate composition of air? [Image of composition of air pie chart]

A) 78% Oxygen, 21% Nitrogen B) 21% Oxygen, 78% Nitrogen, 1% others C) 22% Oxygen and 78% Nitrogen only. D) 78% Oxygen and 22% Nitrogen only.

10. What are the primary products formed during the combustion of a fuel?

A) Nitrogen and Carbon dioxide B) Water vapour and Carbon dioxide C) Water vapour and Nitrogen D) Only Carbon dioxide

Part 3: Section F Applications

11. Which gas makes up approximately 0.03% to 0.04% of the atmosphere and is essential for photosynthesis?

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

12. Which major constituent of air is "inert" and does not take part in combustion?

A) Oxygen B) Nitrogen C) Carbon dioxide D) Water vapour

13. How can you prove the presence of water vapour in the air?

A) By passing air through limewater. B) Condensation on the outer surface of a cold glass. C) By burning a candle in a jar. D) By using a weather balloon.

14. What happens when carbon dioxide is passed through freshly prepared limewater? [Image of lime water test for carbon dioxide]

A) It turns blue. B) It turns pink. C) It turns milky. D) It stays clear.

15. What is the scientific definition of "fuel"? A) Any material that dissolves in water.

B) Material that burns to release large heat and light. C) A gas that turns limewater milky. D) A substance used only in weather balloons.

16. Which experiment proves that air (oxygen) is necessary for combustion?

A) Putting ice in a glass tumbler. B) Inverting a glass tumbler over a burning candle. C) Using a U-tube of copper sulphate. D) Sucking air through limewater.

17. If you use anhydrous copper sulphate to test for water vapour, what color change occurs?

A) From Blue to White B) From White to Blue C) From Clear to Milky D) From Pink to Green

18. What is a primary use of Nitrogen in the food industry?

A) To help food burn faster. B) To provide nutrients. C) To preserve food by driving out oxygen. D) To make food taste sweeter.

19. What is a vital use of Oxygen in nature? A) To dilute the activity of Nitrogen.

B) To support respiration in animals and plants. C) To turn limewater milky. D) To create "dry ice."

20. During lightning, Nitrogen reacts with Oxygen to eventually form:

A) Nitric oxide gas B) Liquid water C) Soil nitrates (food for plants) D) Pure Carbon

📊 Your Quiz Performance

📚 Study Summary from Exercise 5.1

• Air Composition: Air is a mixture containing approximately 78% Nitrogen and 21% Oxygen.

• Testing for CO2: Passing air through freshly prepared limewater causes it to turn milky, proving the presence of Carbon Dioxide.

• Fuels: Fuels like LPG (Liquefied Petroleum Gas) are used for household cooking, while Coal is primarily an industrial fuel.

• Products of Burning: When fuels burn, they consume Oxygen and produce Carbon Dioxide and Water Vapour.