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MCQs

Total Questions : 216 | Page 4 of 22 pages
Question 31. The process which converts the nitrogen gas into the nitrates is called
  1.    carbon fixation
  2.    nitrogen fixation
  3.    oxygen fixation
  4.    nitrate fixation
 Discuss Question
Answer: Option B. -> nitrogen fixation
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 32. The process in which there is the utilization of nitrates by organisms is called
  1.    assimilation
  2.    denitrification
  3.    ammonification
  4.    nitrification
 Discuss Question
Answer: Option A. -> assimilation
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 33. The coal burning in the air leads to
  1.    oxygen and sulphur dioxide
  2.    methane and nitrogen dioxide
  3.    dust and nitrogen
  4.    dust and smoke
 Discuss Question
Answer: Option D. -> dust and smoke
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 34. The representation of biomass energy present in different levels of the food chain is classified as
  1.    food chain pyramid
  2.    food web pyramid
  3.    biomass pyramid
  4.    ecological pyramid
 Discuss Question
Answer: Option D. -> ecological pyramid
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 35. The representation of biomass for per unit area at various trophic levels graphically is classified as
  1.    pyramid of numbers
  2.    pyramid of primary consumers
  3.    pyramid of biomass
  4.    pyramid of decomposers
 Discuss Question
Answer: Option C. -> pyramid of biomass
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 36. Intergovernmental Panel on Climate Change (IPCC) was established in
  1.    1980
  2.    1970
  3.    1950
  4.    1990
 Discuss Question
Answer: Option D. -> 1990
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 37. The law which states that energy is only transformed from one state into another and it is never destroyed nor created is called
  1.    law of momentum
  2.    law of nuclear fission
  3.    law of kinematics
  4.    law of thermodynamics
 Discuss Question
Answer: Option D. -> law of thermodynamics
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 38. The constant flow of energy is from producer to
  1.    consumer
  2.    producer
  3.    herbivores
  4.    carnivores
 Discuss Question
Answer: Option A. -> consumer
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 39. The process of nitrates utilization by organisms is classified as
  1.    assimilation
  2.    nitrification
  3.    denitrification
  4.    ammonification
 Discuss Question
Answer: Option A. -> assimilation
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 40. Pakistan developed the National conservation strategy in
  1.    1990
  2.    1991
  3.    1993
  4.    1992
 Discuss Question
Answer: Option D. -> 1992
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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