Chemistry Class 10th English Medium Chapter 14 Environmental Chemistry The Atmosphere Notes MCQs Questions Bank

chemistry 10th notes Chapter No 14

1. The process by which atmospheric nitrogen is turned into nitrates in the Soil is called:


2. In which sphere ozone layer depletion is found?


3. Depending upon temperature variation, atmosphere is divided into:


4. percent of sunlight is absorb by atmospheric gases:


5. The ozone layer lies within the:


6. Which gas protects the surface of earth from ultra violet radiations:


7. Which region is next to troposphere?


8. How much energy is absorbed by Earth?


9. The percentage of nitrogen in the air is:


10. Lower layer of atmosphere is extended upto:


11. Which of the following is not a greenhouse effect?


12. About 99 percent of atmosphere’s mass lies within:


13. Decreased ozone layer will increase infectious disease like:


14. Infrared radiations emitted by the Earth are absorbed by:


15. Solar energy absorbed by Earth is converted into:


16. This is the layer where airplanes fly:


17. Which is not a primary pollutant?


18. Which one of these pollutants are not foun(doi nccar exhaust fumes?


19. How much energy is absorbed by atmospheric gases?


20. A group of gasses that maintain the temperature of atmosphere is:


21. The pH of normal rain is:


22. The layers of the atmosphere are separated according to this change.


23. The region in which ozone layer depletes is called:


24. Long term exposure to higher concentration of CO might causes:


25. Which one of the followings is not a green house effect:


26. Ozone is beneficial for us as it absorbs:


27. The earths atmosphere is getting hotter because of increasing concentration of:


28. How many natural systems of Earth is divided?


29. Which of the following result obtain due to cutting down of trees?


30. The major constituents of troposphere are:


31. Global warming causes rising of the sea level. The cause of global warming is:


32. Height above the earth surface of stratosphere is:


33. Mid of stratosphere is composed of:


34. Buildings are being damaged by acid rain because it attacks:


35. An ozone-depleting substance mainly used in/released from:


36. Wavelength of Sunlight radiation is:


37. Height above the earth surface of mesosphere is:


38. These pollutants are the wasted or exhaust products driven out because of combustion of fossil fuels and organic matter


39. Temperature decreases from 17°C to -58°C regularly in the lowest layer extending upto kilometers:


40. Which one of the following is not a air pollutant:


41. These pollutants are produced by various reaction of primary pollutants


42. Which metal cause clogging of fish gills.


43. The temperature of stratosphere at lower layer is


44. Height above the earth surface of troposphere is :


45. Percentage of carbon dioxide in atmosphere by volume is


46. The harmful substances present in air are called


47. Which is responsible for rise in temperature in stratosphere?


48. In which region of atmosphere weathers occur?


49. The troposphere extends from the surface of the Earth. The average height of the troposphere is:


50. Iron and steel structures are damaged by


51. Percentage of Nitrogen in the composition of atmosphere by volume is :


52. pH of normal rain water is:


53. Thermosphere lies beyond:


54. Effects of ozone depletion are following except the one;


55. When wood burns in limited supply of oxygen which gas is produced:


56. This is not a possible adverse effect of global warming:


57. Which of the following is a prime health risk associated with greater UV radiation through the atmosphere due to depletion of ozone layer?


58. pH of acid rain is:


59. Atmosphere consists of_..spheres:


60. Height above the earth surface of thermosphere is:


61. Stratosphere extends upto:


62. This layer extend upto 50 km: 


63. When rain water dissolves air pollutants its pH might reduce to:


64. Air has ______ percent argon in it


65. PAN is the abbreviation of


66. Acid rain affects the aquatic life by clogging fish gills because of:


67. Which is not a secondary pollutant?


68. Normally rain water is weakly acidic because of


69. Just Above the earth surface is:


70. Acid rain attacks on:


71. Cause of global warming is:


72. The environment is getting hotter because of increasing concentration of:


73. Global warming is because of:


74. The depletion in the Ozone layer is caused by:


75. Ozone is an allotropic form of:


76. The hottest layer of atmosphere is:


77. Percentage of Argon in atmosphere by volume is


Short Questions

1. CO is a hidden enemy, describe its action.
2. CO₂ is responsible for heating up atmosphere. How?
3. Comment: burning in open air is preferred.
4. Define acid rain.
5. Define atmosphere.
6. Define global warming.
7. Differentiate between primary and secondary air pollutants.
8. Enlist any four harmful effects of acid rain.
9. Enlist the effects of ozone depletion.
10. Explain the phenomenon of decreasing temperature in troposphere.
11. Give two components of acid rain.
12. How are sulphur containing compounds emitted naturally?
13. How does acid rain increase the acidity of soil?
14. How does combustion of fossil fuels in internal combustion engine produce oxides of nitrogen?
15. How does ozone layer form in stratosphere?
16. How does ozone layer protect our Earth?
17. How does the concentration of ozone in stratosphere remain nearly constant?
18. How is acid rain produced?
19. How is aquatic life affected by acid rain?
20. How is ozone layer being depleted by chlorofluorocarbons?
21. How is the temperature of atmosphere maintained?
22. How ozone layer is being depleted by chlorofluorocarbons?
23. How the mixture of NO and NO₂ gases is represented? Write its effects on environment.
24. Identify as primary or secondary air pollutant. SO₂, CH₄, HNO₃, NH₃, H₂SO₄, O₃.
25. Life on earth would have been impossible without CO₂ in environment. Justify.
26. Name the major constituents of troposphere.
27. Name three primary air pollutants.
28. Point out two serious effects of ozone depletion.
29. State the major sources of CO and CO₂ emission.
30. State the temperature ranges of four spheres of atmosphere.
31. Under normal conditions ozone concentration in stratosphere remains nearly constant. Give the reactions that maintain its balance.
32. What are pollutants? Which factors determine the severity of a pollutant?
33. What do you mean by an air pollutant?
34. What do you mean by atmosphere? Name its layers.
35. What do you mean by greenhouse effect?
36. What do you mean by incineration? What is the importance of incinerator?
37. What do you mean by ozone hole?
38. What do you mean by pollution?
39. What is biosphere?
40. What is global warming? Give its two effects.
41. What is meant by ozone? How is it formed in atmosphere?
42. What is ozone layer and where is it present?
43. What is the composition of flue gas produced during incineration of waste material?
44. What is the difference between a pollutant and contaminant?
45. What is the difference between atmosphere and environment?
46. What is the disadvantage of incineration?
47. What is the importance of stratospheric ozone?
48. What is the range of temperature of stratosphere and mesosphere?
49. What threats are to human health due to SO₂ gas as air pollutant?
50. Where does the ozone layer exist?
51. Where is the ozone layer found?
52. Which air pollutant is produced in an anaerobic decomposition of organic matter?
53. Why are plants dying day by day? Comment.
54. Why does 75 percent of the mass lie within the troposphere?
55. Why does acid rain damage buildings?
56. Why does the 75 percent of the atmospheric mass lie within the troposphere?
57. Why is CO₂ called a greenhouse gas?
58. Why is ozone depleting in atmosphere?
59. Why is the temperature of upper stratosphere higher?
60. Why is the water molecule polar?
61. Why normal rain water is slightly acidic?
62. Why should converters be used in automobile exhausts?
63. Why the flood risks are increasing?
64. Without CO₂ life on Earth would have been impossible. Comment.
65. Write composition of dry air.
66. Write down the name of stratosphere’s regions.
67. Write four natural systems of our earth.
68. Write the chemical reactions occurring in the mid of stratosphere.
69. Write two effects of acid rain.

Long Questions

1. Describe the composition of atmosphere.
2. Explain CO₂ is necessary for plants but its increasing concentration is alarming us. Why?
3. Oxides of nitrogen cause air pollution. Describe the sources of these compounds.
4. What are oxides of carbon? Write down their sources.
5. What are pollutants? Describe their types.
6. What are the characteristics of stratosphere? Why the temperature increase upwards in this sphere?
7. What is acid rain? How it is formed?
8. What is ozone? How and where it is formed? CFCs are major cause of ozone depletion. Explain.
9. What is ozone? Write the effects of ozone depletion.
10. Write a note on greenhouse effect.
11. Write a note on troposphere.
12. Write down the effects of global warming.
13. Write down the effects of presence of SO₂­ in air.
14. Write the effects of acid rain.
15. Write the sources of oxides of nitrogen.

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