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ENVIRONMENTAL SCIENCE MCQs

Total Questions : 2671 | Page 9 of 268 pages
Question 81. The formation of __________ is the most characteristic feature in upper course of a river
  1.    landslide
  2.    canyons
  3.    gorges
  4.    waterfalls
 Discuss Question
Answer: Option D. -> waterfalls
Question 82. Which among the following is mobile in nature?
  1.    Primary productivity
  2.    Secondary productivity
  3.    GPP
  4.    NPP
 Discuss Question
Answer: Option B. -> Secondary productivity
Question 83. Which functional feeding groups are involved in the process of in-stream physical breakdown of coarse material into fine particulate organic matter?
  1.    Collector filterers
  2.    Shredders
  3.    Grazers
  4.    Collector gatherers
 Discuss Question
Answer: Option B. -> Shredders
Question 84. Infection of HIV is usually detected by which test
  1.    Elisa test
  2.    Hybridization
  3.    Gram staining
  4.    None
 Discuss Question
Answer: Option A. -> Elisa test
Question 85. When the air temperature is below freezing, the saturation vapour pressure over water is .
  1.    Equal to zero
  2.    Less than the saturation vapour pressure over ice
  3.    Greater than the saturation vapour pressure over ice
  4.    Equal to the saturation vapour pressure over ice
 Discuss Question
Answer: Option C. -> Greater than the saturation vapour pressure over ice
Question 86. The dramatic increase in agricultural production that have been made possible by high yield miracle crops are called the
  1.    biotechnical revolution
  2.    bioeconomic revolution
  3.    green house effect
  4.    green revolution
 Discuss Question
Answer: Option D. -> green revolution
Question 87. In the atmosphere, tiny solid or liquid suspended particles of various composition are called:
  1.    Aerosols
  2.    Carcinogens
  3.    Greenhouse gases
  4.    Microbes
 Discuss Question
Answer: Option A. -> Aerosols
Question 88. What is meant by GM foods?
  1.    Growth modified foods
  2.    Genetically modified food
  3.    Growth marked foods
  4.    Good mobility food
 Discuss Question
Answer: Option B. -> Genetically modified food
Question 89. Which of the following gas is present at a very high concentration in our environment?
  1.    O2
  2.    CO2
  3.    H2
  4.    N2
 Discuss Question
Answer: Option D. -> N2
Question 90. _________ refers to the phenomenon in that the organisms are exclusively restricted to a given area.
  1.    Ecosystem
  2.    Endemism
  3.    Habitat
  4.    Food web
 Discuss Question
Answer: Option B. -> Endemism

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