Questions : Air

 Questions : Air

Q.1. All living beings need air to ____________.

Q.2. Write properties of air.

Q.3. What is wind?

Q.4. Describe how air has weight?

Q.5. What describes the air force?

Q.6. When we move against the wind, we feel the ___________ of the wind.

Q.7. Demonstrate that air occupies space.

Q.8. What are the uses of air?

Q.9. ___________ helps boats to sail and gliders to move.

Q.10. _________ air can dry wet clothes.

Q.11. Fast moving air can _________ the blades of a windmill.

Q.12. Who needs air to breathe?

Q.13. Where can air be filled?

Q.14. Air is needed for ___________ a fire and to keep it _________.

Q.15. What is a storm?

Q.16. What is damaged by storms?

Q.17. Storms can hurt ___________ _____________ and  __________.

Pollution of Air and Water

 Pollution of Air and Water

Q.1. What makes life possible on Earth?

Q.2. Name two harmful gases.

Q.3. What is air pollution?

Q.4. What is water pollution?

Q.5. Name some air pollutants.

Q.6. What are the causes of air pollution?

Q.7. How is automobile emissions a cause of air pollution?

Q.8. How does lead enter the atmosphere?

Q.9. Which pollutants are released by the combustion of coal?

Q.10. Which gases are the cause of acid rain and smog?

Q.11. What are the natural causes of air pollution?

Q.12. What are air pollutants?

Q.13. What is the full form of SPM?

Q.14. What is SPM?

Q.15. What are the two types of Particulate matter?

Q.16. How are coarse particles formed?

Q.17. How are fine particles formed?

Q.18. What kind of diseases are caused by fine particulate matter?

Q.19. How is carbon monoxide produced?

Q.20. How is carbon monoxide harmful to human beings?

Q.21. What is the full form of CFC?

Q.22. What are the contents of CFC?

Q.23. How is CFC harmful to human beings?

Q.24. How is CFC harmful to the atmosphere?

Q.25. Where is CFC used by humans?

Q.26. When is CO2 considered a pollutant?

Q.27. How is CO2 harmful to living organisms?

Q.28. What is the cause of the greenhouse effect?

Q.29. What are the causes of sulphur dioxide?

Q.30. How is sulphur dioxide harmful to humans?

Q.31. How is sulphur dioxide harmful to plants?

Q.32. Name the major reason for acid rain.

Q.33. How does nitric oxide enter the atmosphere? How does it affect the air?

Q.34. How is ozone harmful to humans?

Q.35. How is lead harmful to humans?

Q.36. What is acid rain?

Q.37. What are the sources of gases which cause acid rain?

Q.38. Which damages are caused by acid rain?

Q.39. Describe the project ‘Save Taj’.

Q.40. What is the greenhouse effect?

Q.41. Which gases are the greenhouse gases?

Q.42. What are the harmful results of the Greenhouse Effect?

Q.43. What are the useful applications of Greenhouse?

Q.44. What are Water Pollutants?

Q.45. What are the sources of water pollution?

Q.46. What is domestic sewage? How is it harmful to us?

Q.47. How is agricultural runoff a cause of water pollution?

Q.48. What is eutrophication?

Q.49. What are Industrial Effluents?

Q.50. Which metals are present in the effluents of industries?

Q.51. How do industrial effluents affect the body of a person?

Q.52. What is thermal pollution?

Q.53. Which diseases are caused by microbial pollutants?

Q.54. What are the steps to prevent water pollution?

Q.55. What is potable water?

Q.56. What are the properties of potable water?

Q.57. Why should the water be purified?

Q.58. What is chlorination?

Q.59. How can water be purified at home?

Q.60. Give an account of how Kanpur is polluting Ganga?

Questions : Air Around Us

 Air Around Us

Q.1. Why do we need air?

Q.2. What makes the air clean and fresh?

Q.3. How do we feel about the air?

Q.4. Living things need air for what purpose?

Q.5. What is air?

Q.6. Name the most common gases present in air.

Q.7. Name two substances present in air which are not gases.

Q.8. Name the major component of air.

Q.9. Name the second largest component of air.

Q.10. Which gas supports burning?

Q.11. Which gas is taken in while breathing?

Q.12. Which gas is given out while breathing?

Q.13. Which gas is taken in by plants?

Q.14. Which gas is given out by plants?

Q.15. How is a plant helpful to us?

Q.16. What are the properties of air?

Q.17. What is wind?

Q.18. What is a gently blowing wind called?

Q.19. What is a storm?

Q.20. What is a very strong wind called?

Q.21. Which instrument is used to find the direction of wind?

Q.22. Which is easier, cycling against the direction of the wind or in the direction of wind.

Q.23. Do winds have force?

Q.24. What are the uses of wind?

Questions : Air Around Us

 Air  Around Us

Q.1. What is a wind?

Q.2. What is a storm?

Q.3. What is the use of a weather clock?

Q.4. Wind helps in the movement of what?

Q.5. Give two properties of air?

Q.6. What is the atmosphere?

Q.7. Why do mountaineers carry oxygen cylinders while climbing high mountains?

Q.8. What keeps the atmosphere in its place?

Q.9. Who discovered oxygen and in which year?

Q.10. Name the main gases present in the air.

Q.11. What is the fraction of Nitrogen in the air?

Q.12. Does nitrogen support combustion?

Q.13. What is the term used for the amount of water vapour present in the air?

Q.14. Which place has more humidity, Mumbai or Delhi?

Q.15. Humans give out which gas during respiration?

Q.16. Why do we feel suffocated, if some material is burning in a closed room with no ventilation?

Q.17. Which colour is given by carbon dioxide present in the air to lime water?

Q.18. Why do policemen wear masks in crowded crossings?

Q.19. Why should we breathe through the nose?

Q.20. Why do dolphins and whales come to the surface of water?

Q.21. How does oxygen become available to plants and animals living in water?

Q.22. Show with the help of an experiment that air is dissolved in water.

Q.23. How do organisms living in soil get oxygen to respire?

Q.24. What is the Oxygen cycle?

Q.25. What are the uses of air?

Questions : Air and its uses

 Air and its Uses

Q.1. Give two properties of air.

Q.2. Name some materials in which air can be filled.

Q.3. Why does a balloon expand when air is filled in it?

Q.4. Name some substances in which air can be used to draw liquids?

Q.5. Explain the principle of working of medicine droppers and ink fillers.

Q.6. Explain the working of a common lift pump.

Q.7. What is air?

Q.8. Which air is breathed in and given out during respiration?

Q.9. Why do mountaineers take oxygen cylinders with them while climbing mountains?

Q.10. Which gas is essential for burning?

Q.11. Which gas is essential for plant growth?

Q.12. Which gas makes the soil fertile?

Q.13. Name some common nitrogenous fertilizers?

Q.14. What is the use of carbon dioxide for plants?

Q.15. What is photosynthesis?

Q.16. Which gas is used in a fire extinguisher?

Q.17. What is air pollution?

Q.18. What are air pollutants? Name some air pollutants?

Q.19. Name three gases present in air?

Q.20. Name some establishments that produce smoke which pollutes the air.

Q.21. What are the harmful effects of air pollution?

Q.22. Which gas reduces the oxygen carrying capacity of the blood?

Q.23. What is the effect of sulphur dioxide on the body?

Q.24. What are the effects of sulphur dioxide other than the body?

Q.25. What are the sources of sulphur dioxide?

Q.26. What is the effect of nitrogen dioxide on animals and plants?

Q.27. What causes lung fibrosis or pneumoconiosis?

Q.28. How can the effect of air pollution be minimised?

Q.29. What precautions should be taken with automobiles to reduce air pollution?

Q.30. What should be used for dust to reduce air pollution?

Q.31. What should be used for finer particles to reduce air pollution?

Q.32. What should be used for mist and fogs to reduce air pollution?