This quiz works best with JavaScript enabled. Home > Class 6 > Class 6 Science Chapter 15 Air Around Us – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 6 Science Chapter 15 Air Around Us Quiz 18 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Plants and animals need air to ..... A) Live. B) Drink. C) Smell. D) None of the above. Show Answer Correct Answer: A) Live. 2. Which of the following breathe through lung?? A) Grasshopper. B) Elephant. C) Fish. D) None of the above. Show Answer Correct Answer: B) Elephant. 3. Earth is enveloped by a layer of gas? A) Cloud Bubble. B) Atmoshphere. C) Nitrogen. D) Troposphere. Show Answer Correct Answer: B) Atmoshphere. 4. The layer of air which surrounds earth is called A) Atmosphere. B) Hydrosphere. C) Lithosphere. D) None of the above. Show Answer Correct Answer: A) Atmosphere. 5. The trees use ..... gas for breathing A) CO2. B) H2O. C) O2. D) NONE OF THESE. Show Answer Correct Answer: C) O2. 6. Which of the following are greenhouse gases? A) Carbon dioxide. B) Methane. C) Water vapor. D) All answers are correct. Show Answer Correct Answer: D) All answers are correct. 7. A layer of air called ..... surrounds the earth. A) Stratosphere. B) Troposphere. C) Atmosphere. D) None of the above. Show Answer Correct Answer: C) Atmosphere. 8. Which gases have 0.01% A) Argon, ozone, carbon di-oxide and hydrogen. B) Nitrogen. C) Oxygen. D) Air pollution. Show Answer Correct Answer: A) Argon, ozone, carbon di-oxide and hydrogen. 9. If the clothes of a person catch fire while working in the kitchen, which of the following should be used to cover the burning clothes of the person so as to extinguish fire? A) Nylon blanket. B) Woollen blanket. C) The teryls blanked. D) Polythene blanket. Show Answer Correct Answer: B) Woollen blanket. 10. Fig11.12 How does wind mill works? Page94 Leela A) Wind mills work by using geothermal energy to generate power. B) Wind mills work by harnessing the power of water currents. C) Wind mills work by converting solar energy into electricity. D) Wind mills work by converting the kinetic energy of the wind into mechanical power, which can then be used to generate electricity. Show Answer Correct Answer: D) Wind mills work by converting the kinetic energy of the wind into mechanical power, which can then be used to generate electricity. 11. ..... is an important ..... gas that helps to trap heat in our atmosphere. Without it, our planet would be inhospitably cold. A) Oxygen, Greenhouse. B) Carbon dioxide, Natural. C) Argon, Natural. D) Carbon dioxide, Greenhouse. Show Answer Correct Answer: D) Carbon dioxide, Greenhouse. 12. Harmful substance in air, water, or soil are called ..... A) Pollutants. B) Particles. C) All the above. D) None of the above. Show Answer Correct Answer: A) Pollutants. 13. Can we feel Air? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 14. What holds the atmosphere on Earth so it doesn't drift away into space? A) Water. B) Sunlight. C) Gravity. D) Moonbeams. Show Answer Correct Answer: C) Gravity. 15. Sometimes you may have felt suffocation, why do you think so. A) Water Pollution. B) Your lungs are broken. C) Air Pollution. D) Oxygen Pollution. Show Answer Correct Answer: C) Air Pollution. 16. How much percentage do the gases excluding oxygen and nitrogen take up in the atmosphere? A) 100%. B) 55%. C) 1%. D) 2%. Show Answer Correct Answer: C) 1%. 17. Gas used in balloons to make them float? A) Hydrogen. B) Helium. C) Xenon. D) Ozone. Show Answer Correct Answer: B) Helium. 18. Why do mountaineers take oxygen cylinders with them while climbing a mountain? A) Water is everywhere. B) Air is density less. C) Climbing mountains is risky. D) They are scared. Show Answer Correct Answer: B) Air is density less. 19. Percentage of carbon dioxide in the air? A) 0.000098. B) 0.09. C) 0.007. D) 0.1. Show Answer Correct Answer: B) 0.09. 20. Name some layers of atmosphere A) Mesosphere. B) Thermosphere. C) Exosphere. D) All of these. Show Answer Correct Answer: D) All of these. 21. Which of these is true about Air? A) It has colour. B) It is all around us. C) It can be measured in a cup. D) You can wrap it around you like a blanket. Show Answer Correct Answer: B) It is all around us. 22. Apart from nitrogen which is the another major gas in the composition of air? A) Hydrogen. B) Carbon dioxide. C) Oxygen. D) Water vapour. Show Answer Correct Answer: C) Oxygen. 23. Which of the following gasses helps in burning A) Nitrogen. B) Ozone. C) Oxygen. D) Helium. Show Answer Correct Answer: C) Oxygen. 24. Statement 1:Mountaineers carry oxygen cylinders with them while climbing high mountains.Statement 2:The percentage of oxygen in the air decrease with increasing altitude. A) Statement 1 is true and statement 2 is the correct explanation. B) Both statements are true. C) Statement 1 is true and statement 2 is false. D) Statement 1 is false and statement 2 is true. Show Answer Correct Answer: C) Statement 1 is true and statement 2 is false. 25. Air pressure is measured with a A) Thermometer. B) Hot-air balloon. C) Satellite. D) Barometer. Show Answer Correct Answer: D) Barometer. ← PreviousNext →Related QuizzesClass 6 Science Chapter 15 Air Around Us Quiz 1Class 6 Science Chapter 15 Air Around Us Quiz 2Class 6 Science Chapter 15 Air Around Us Quiz 3Class 6 Science Chapter 15 Air Around Us Quiz 4Class 6 Science Chapter 15 Air Around Us Quiz 5Class 6 Science Chapter 15 Air Around Us Quiz 6Class 6 Science Chapter 15 Air Around Us Quiz 7Class 6 Science Chapter 15 Air Around Us Quiz 8Class 6 Science Chapter 15 Air Around Us Quiz 9Class 6 Science Chapter 15 Air Around Us Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books