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MCQs

Total Questions : 560 | Page 9 of 56 pages
Question 81. Agents of deforestation are:
  1.    Infrasructure Developers
  2.    Slash-and-burn farmers
  3.    Commercial farmers
  4.    All of above
 Discuss Question
Answer: Option D. -> All of above
Answer: (d).All of above
Question 82. According to climate scientists, main cause of global warming trend involves:
  1.    Sulfuric acid
  2.    Carbon dioxide
  3.    Human diffusion of greenhouse effect
  4.    Both b and c
 Discuss Question
Answer: Option D. -> Both b and c
Answer: (d).Both b and c
Question 83. Overgrazing is very common in drier areas of the
  1.    Sub tropics area
  2.    Drier tropics area
  3.    Temperates zone
  4.    Boreal Forest
 Discuss Question
Answer: Option B. -> Drier tropics area
Answer: (b).Drier tropics area
Question 84. Lifespan of CFCs in atmosphere is:
  1.    10-30 years
  2.    40-30 years
  3.    60 to 30 years
  4.    100-30 years
 Discuss Question
Answer: Option C. -> 60 to 30 years
Answer: (c).60 to 30 years
Question 85. 'Photovoltaic' cell convert solar radiation into:
  1.    Waves
  2.    Electricity
  3.    Radiations
  4.    Heat
 Discuss Question
Answer: Option B. -> Electricity
Answer: (b).Electricity
Question 86. Particulate matters, which are smaller than 10 micrometer can be inhaled :
  1.    In mouth region
  2.    In deepest parts of the lung
  3.    Between nostrils
  4.    In one breath
 Discuss Question
Answer: Option B. -> In deepest parts of the lung
Answer: (b).In deepest parts of the lung
Question 87. Ratio of increased greenhouse effect of any gas campared with carbondioxide is known as:
  1.    Global Warming
  2.    Greenhouse effect
  3.    Greenhouse Gases
  4.    Global warming potential
 Discuss Question
Answer: Option D. -> Global warming potential
Answer: (d).Global warming potential
Question 88. What is used as a radioactive tracer?
  1.    Protium
  2.    Deuterium
  3.    Tritium
  4.    Muonium
 Discuss Question
Answer: Option C. -> Tritium
Answer: (c).Tritium
Question 89. Semi conductor silicon Boron solar chips, having
  1.    A neutral efficiency Ratio
  2.    A low efficiency Ratio
  3.    A high efficiency Ratio
  4.    A medium efficiency Ratio
 Discuss Question
Answer: Option B. -> A low efficiency Ratio
Answer: (b).A low efficiency Ratio
Question 90. Cropping of wood by judicious pruning is known as:
  1.    Cutting
  2.    Coppicing
  3.    Grazing
  4.    Rotting
 Discuss Question
Answer: Option B. -> Coppicing
Answer: (b).Coppicing

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