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MCQs

Total Questions : 198 | Page 7 of 20 pages
Question 61. Which of the following is the best way to reduce acid rain in soil?
  1.    By adding sulphur to the soil
  2.    By adding nitrogen to the soil
  3.    By adding oxygen to the soil
  4.    By adding limestone to the soil
 Discuss Question
Answer: Option D. -> By adding limestone to the soil
Answer: (d).By adding limestone to the soil
Question 62. Which is the most acidic in pH scale?
  1.    0
  2.    7
  3.    10
  4.    14
 Discuss Question
Answer: Option A. -> 0
Answer: (a).0
Question 63. When was the “Clean Air Act” in United States came into force?
  1.    1950
  2.    1960
  3.    1970
  4.    1980
 Discuss Question
Answer: Option C. -> 1970
Answer: (c).1970
Question 64. Natural sources also cause acid rain.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 65. Which of the following is threat to the ozonosphere?
  1.    Nitrogen dioxide
  2.    Oxygen
  3.    CFCs
  4.    Carbon dioxide
 Discuss Question
Answer: Option C. -> CFCs
Answer: (c).CFCs
Question 66. Why ozone within the upper environment is important?
  1.    Because it provides rain to the earth
  2.    It protects the earth from the sun’s harmful ultraviolet radiations
  3.    It provides good aesthetic view to the atmosphere
  4.    It protects the earth from floods
 Discuss Question
Answer: Option B. -> It protects the earth from the sun’s harmful ultraviolet radiations
Answer: (b).It protects the earth from the sun’s harmful ultraviolet radiations
Question 67. How many oxygen particles are there in every atom of ozone?
  1.    One
  2.    Two
  3.    Three
  4.    Four
 Discuss Question
Answer: Option C. -> Three
Answer: (c).Three
Question 68. Which of the following action takes place in the formation of ozone?
  1.    Action of daylight on oxygen
  2.    Action of daylight on nitrogen
  3.    Action of daylight on hydrogen
  4.    Action of daylight on phosphorous
 Discuss Question
Answer: Option A. -> Action of daylight on oxygen
Answer: (a).Action of daylight on oxygen
Question 69. Which one of the following is a result of ozone layer depletion?
  1.    Increase in the oxygen level
  2.    Increase in the nitrogen level
  3.    Increase in the phosphorous level
  4.    Increases in the carbon dioxide level
 Discuss Question
Answer: Option D. -> Increases in the carbon dioxide level
Answer: (d).Increases in the carbon dioxide level
Question 70. In which layer of atmosphere ozone is very vital for all vegetation?
  1.    Upper atmosphere
  2.    Below atmosphere
  3.    Ground level
  4.    Below ground level
 Discuss Question
Answer: Option A. -> Upper atmosphere
Answer: (a).Upper atmosphere

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