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MCQs

Total Questions : 439 | Page 39 of 44 pages
Question 381. Which gas is produced by plants during photosynthesis?
  1.    Oxygen
  2.    Carbon dioxide
  3.    Both a and b
  4.    None of these
 Discuss Question
Answer: Option A. -> Oxygen
Answer: (a).Oxygen
Question 382. Why the insolation is low in mid of winter at high latitudes?
  1.    Due to Short daylights
  2.    Sun is shinning from a very low angle
  3.    Both a and b
  4.    None of these
 Discuss Question
Answer: Option C. -> Both a and b
Answer: (c).Both a and b
Question 383. What is the total reflection of heat?
  1.    32%
  2.    54%
  3.    65%
  4.    76%
 Discuss Question
Answer: Option A. -> 32%
Answer: (a).32%
Question 384. Green house effect is a
  1.    Natural Process
  2.    Artificial System
  3.    Manmade
  4.    All of these
 Discuss Question
Answer: Option A. -> Natural Process
Answer: (a).Natural Process
Question 385. What percent of heat is reflected by the surface of earth?
  1.    3%
  2.    6%
  3.    4%
  4.    7%
 Discuss Question
Answer: Option B. -> 6%
Answer: (b).6%
Question 386. The earth and its atmosphere is the greatest
  1.    Natural System
  2.    Artificial System
  3.    Both a and b
  4.    None of these
 Discuss Question
Answer: Option A. -> Natural System
Answer: (a).Natural System
Question 387. In which layer the highest concentration of ozone is present?
  1.    Stratosphere
  2.    Thermosphere
  3.    Troposphere
  4.    All of these
 Discuss Question
Answer: Option A. -> Stratosphere
Answer: (a).Stratosphere
Question 388. When the watervapours, carbon dioxides and cloud droplets retain heat in the atmosphere is known as
  1.    Insolation
  2.    Green house effect
  3.    Insulation
  4.    All of these
 Discuss Question
Answer: Option B. -> Green house effect
Answer: (b).Green house effect
Question 389. What are the effects of smog on water bodies?
  1.    Death of Fishes and Plants
  2.    Death of plants
  3.    Eutrophication
  4.    Transfere of disease through foodchain
 Discuss Question
Answer: Option C. -> Eutrophication
Answer: (c).Eutrophication
Question 390. Which two layers of atmosphere are important for human life?
  1.    Stratosphere
  2.    Troposphere
  3.    Both a and b
  4.    Hydrosphere
 Discuss Question
Answer: Option C. -> Both a and b
Answer: (c).Both a and b

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