Environmental Science(General Knowledge ) Questions and Answers

Question 1. Water vapour is:
  1.    A gas
  2.    A cloud droplet
  3.    A rain drop
  4.    A snowflake
Explanation:-
Answer: Option A. -> A gas
Question 2. Infrared and visible satellite images might provide:
  1.    A way of determining cloud thickness and altitude.
  2.    A way of distinguishing between wet and dry clouds.
  3.    A way of identifying clouds suitable for cloud seeding.
  4.    A way of distinguishing between "new" and "old" clouds.
Explanation:-
Answer: Option A. -> A way of determining cloud thickness and altitude.
Question 3. What is the cause of the Exxon Valdez?
  1.    Oil Tanker which sank in 1989 along the coast of Alaska and marine life seriously affected.
  2.    a plane which crashed and caused death of human life
  3.    a ship which wrecked on the coast of India
  4.    none of these.
Explanation:-
Answer: Option A. -> Oil Tanker which sank in 1989 along the coast of Alaska and marine life seriously affected.
Question 4. At what time of day is the relative humidity normally at a minimum?
  1.    When the air temperature is highest
  2.    Just before sunrise
  3.    About midnight
  4.    When the air temperature is lowest
Explanation:-
Answer: Option A. -> When the air temperature is highest
Question 5. In calm air the air temperature is -10o C, if the wind speed should increase to 30 knots (with no change in air temperature) the thermometer would indicate:
  1.    A much higher temperature than -10o C
  2.    A much lower temperature than -10o C
  3.    A temperature of -10o C
  4.    A temperature of -30o C
Explanation:-
Answer: Option C. -> A temperature of -10o C
Question 6. The atmospheric greenhouse effect is produced mainly by the:
  1.    Absorption and re-emission of visible light by the atmosphere
  2.    Absorption and re-emission of ultraviolet radiation by the atmosphere
  3.    Absorption and re-emission of infrared radiation by the atmosphere
  4.    Absorption and re-emission of visible light by clouds
  5.    Absorption and re-emission of visible light by the ground
Explanation:-
Answer: Option C. -> Absorption and re-emission of infrared radiation by the atmosphere
Question 7. The blueness of the sky is mainly due to:
  1.    The scattering of sunlight by air molecules
  2.    The presence of water vapor
  3.    Absorption of blue light by the air
  4.    Emission of blue light by the atmosphere
Explanation:-
Answer: Option A. -> The scattering of sunlight by air molecules
Question 8. The atmosphere near the earth's surface is "heated from below." Which of the following does not significantly contribute to this heating?
  1.    Conduction of heat upward from a hot surface
  2.    Convection from a hot surface
  3.    Absorption of infrared energy that has been radiated from the surface
  4.    Heat energy from the earth's interior
Explanation:-
Answer: Option D. -> Heat energy from the earth's interior
Question 9. The gradual physiological adjustment to slowly changing new environmental conditions is known as
  1.    Selection
  2.    Introduction
  3.    Acclimatization
  4.    Quarantine
Explanation:-
Answer: Option C. -> Acclimatization
Question 10. Salinization is ___________.
  1.    Accumulation of salts in water
  2.    Accumulation of salts in soil
  3.    Accumulation of salts in body
  4.    Accumulation of salts in animals
Explanation:-
Answer: Option B. -> Accumulation of salts in soil
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