Railways General Science & Technology Ecology and Environment Sample Paper

done Ecology & Environment Awareness Sample Test Paper-35 Total Questions - 20    [Download]

• question_answer1)
  In an ecosystem, green plants are known as
  A)
   Primary consumers
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  B)
   Secondary consumers
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  C)
   Producers
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  D)
   Tertiary consumers
  done clear
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• question_answer2)
  World environment day is celebrated on
  A)
   15th March      
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  B)
   15th April
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  C)
   4th May          
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  D)
   5th June
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• question_answer3)
  Sound becomes hazardous noise pollution at level
  A)
   Above 30 dB    
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  B)
   above 80 dB
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  C)
   Above 100 dB
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  D)
          above 120 dB
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• question_answer4)
  Major aerosol pollutant in jet plane emission is
  A)
   Sulphur dioxide
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  B)
   carbon monoxide
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  C)
   Methane          
  done clear
  D)
   fluorocarbon
  done clear
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• question_answer5)
  As energy is passed from one trophic level to another, the amount of usable energy
  A)
   Increases
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  B)
   Decreases
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  C)
   Remains the same
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  D)
   Energy is not passed from one trophic level to another
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• question_answer6)
  The Taj mahal is threatened due to the effect of
  A)
   Oxygen
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  B)
   hydrogen
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  C)
   Chlorine           
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  D)
   sulphur dioxide
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• question_answer7)
  CFC are not recommended to be used in refrigerators because they
  A)
   Increase temperature
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  B)
   affect environment
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  C)
   Affect aquatic life
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  D)
   affect human body
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• question_answer8)
  Pyramids of energy are
  A)
   Always upright
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  B)
          always inverted
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  C)
   Mostly upright
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  D)
          mostly inverted
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• question_answer9)
  The most common indicator organism that represents polluted water is
  A)
   E. coli 
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  B)
   Pseudomonas
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  C)
   Chlorella          
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  D)
   Entamoeba
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• question_answer10)
  The \[C{{O}_{2}}\] content in the atmospheric air is about
  A)
   0.034%
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  B)
   0.34%
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  C)
   3.34% 
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  D)
   6.5%
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• question_answer11)
  Ozone layer is essential because it absorbs most of the
  A)
   Infrared radiations
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  B)
   heat
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  C)
   Solar radiation
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  D)
   ultraviolet-radiation
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• question_answer12)
  Which of the following is a manmade artificial ecosystem?
  A)
   Grassland ecosystem
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  B)
   Agro ecosystem
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  C)
   Ecosystem of artificial lakes and dams
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  D)
   Forest ecosystem
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• question_answer13)
  Soil best suited for plant growth is
  A)
   Clay                
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  B)
   Loam
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  C)
   Sandy 
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  D)
   Gravel
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• question_answer14)
  Which of the following is a biodegradable waste?
  A)
   Radioactive wastes
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  B)
   Aluminium cans
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  C)
   QDT               
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  D)
   Cattle dung
  done clear
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• question_answer15)
  Association of animals when one species is harmed and the other one is unaffected, is known as
  A)
   Colony
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  B)
   Mutualism
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  C)
   Commensalism
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  D)
          Amensalism
  done clear
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• question_answer16)
  Which is the first national park established in India?
  A)
   Bandipur national park
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  B)
   Corbett national park
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  C)
   Kanha national park
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  D)
   Periyar national park
  done clear
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• question_answer17)
  Among the most dangerous non-biodegradable waste is
  A)
   cow-dung         
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  B)
   plastic articles
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  C)
   Garbage          
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  D)
   radioactive waste
  done clear
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• question_answer18)
  Which group of vertebrates comprises the highest number of endangered species?
  A)
   Birds   
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  B)
   Mammals
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  C)
   Fishes  
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  D)
   Reptiles
  done clear
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• question_answer19)
  Which one of the following is an example of ex-situ conservation?
  A)
   Wildlife sanctuary
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  B)
   Seed bank
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  C)
   Sacred groves
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  D)
   National park
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• question_answer20)
  In case \[C{{O}_{2}}\] of earth's atmosphere disappears, the temperature of earth's surface would
  A)
   Increase
  done clear
  B)
   Decrease
  done clear
  C)
   Depend on oxygen concentration
  done clear
  D)
   Remain the same
  done clear
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