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ENVIRONMENTAL SCIENCE MCQs

Total Questions : 2671 | Page 6 of 268 pages
Question 51. Where are the days and nights of equal length all year long?
  1.    At 66.5o
  2.    Nowhere
  3.    At 23.5o
  4.    At the Equator
 Discuss Question
Answer: Option D. -> At the Equator
Question 52. During the winter solstice in the Northern Hemisphere:
  1.    Astronomical winter begins in the Northern Hemisphere
  2.    The noon sun is overhead at 23.5o S latitude
  3.    At middle latitudes in the Northern Hemisphere, this marks the longest night of the year
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 53. The largest annual ranges of temperatures are found:
  1.    At polar latitudes over land
  2.    At polar latitudes over water
  3.    At middle latitudes near large bodies of water
  4.    At the Equator
  5.    In the Northern Central Plains of the United States
 Discuss Question
Answer: Option A. -> At polar latitudes over land
Question 54. The time of day when the relative humidity reaches a maximum value is usually
  1.    At the time when the air temperature is highest
  2.    In the middle of the afternoon
  3.    At the time when the air temperature is lowest
  4.    Just before sunrise
  5.    About midnight
 Discuss Question
Answer: Option C. -> At the time when the air temperature is lowest
Question 55. Night time temperatures rarely drop below the dew point temperature because
  1.    The dew will absorb all the heat
  2.    Saturation vapor pressures always increase at night
  3.    At saturation, latent heat of condensation is released into the air
  4.    Both (b) and (c)
 Discuss Question
Answer: Option C. -> At saturation, latent heat of condensation is released into the air
Question 56. The deepest radiation inversion would be observed:
  1.    At the equator any day of the year
  2.    In polar regions in winter
  3.    At the top of a high mountain in winter
  4.    On a desert in winter
  5.    In a deep valley during the summer
 Discuss Question
Answer: Option B. -> In polar regions in winter
Question 57. The abiotic and biotic components constitute the structure of an
  1.    energy flow
  2.    environment
  3.    atmosphere
  4.    Ecosystem
 Discuss Question
Answer: Option D. -> Ecosystem
Question 58. All species on earth together with their environments collectively comprise
  1.    lithosphere
  2.    hydrosphere
  3.    atmosphere
  4.    biosphere
 Discuss Question
Answer: Option D. -> biosphere
Question 59. The practical problem in hydrogen production is its
  1.    weight
  2.    valency
  3.    atomicity
  4.    chemical property
 Discuss Question
Answer: Option A. -> weight
Question 60. In the northern hemisphere, the number of hours of daylight begin to shorten after the
  1.    Spring equinox
  2.    Summer solstice
  3.    Autumn equinox
  4.    Winter solstice
 Discuss Question
Answer: Option B. -> Summer solstice

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