QUIZ - FOR AIR AND ATMOSPHERE

Chemistry Unit Test 5.1

Based on Chapter 5: Air and Atmosphere

Part 1: Fact Checker (Section D)

1. What is the approximate ratio of oxygen to nitrogen by volume in the air? 4 : 1 1 : 4 1 : 1 3 : 2

2. Which material is identified as a common household fuel in rural India? Coal Biomass Petroleum Natural Gas

3. What are the actual requirements (raw materials) for combustion to occur? CO2 and Water Fuel and Oxygen Nitrogen and Heat CO2 and Nitrogen

Part 2: Multiple Choice (Section E)

4. The Atmosphere is best defined as: Air found above land mass Air found above oceans Air immediately around us Envelope of air around the earth

5. The constituent of air which helps in combustion is: Nitrogen Oxygen Carbon dioxide Helium

6. A gas which is commonly used as household fuel is: CNG LPG Oxygen Nitrogen

7. What is the correct approximate composition of air? 78% Oxygen, 21% Nitrogen 21% Oxygen, 78% Nitrogen, 1% others 22% Oxygen, 78% Nitrogen 78% Oxygen, 22% Nitrogen

Part 3: Scientific Reasoning (Section F)

8. Which major constituent of air is "inert" and doesn't help in burning? Nitrogen Oxygen Hydrogen Methane

9. Which constituent of air is essential for the process of Photosynthesis? Nitrogen Oxygen Carbon dioxide Argon

10. How is the presence of Carbon dioxide in air experimentally proven? Using a cold glass tumbler Limewater turns milky when air is sucked through Using white copper sulphate Using phosphorus in a test tube

🎉 Quiz Completed! 🎉