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MCQs

Total Questions : 110 | Page 6 of 11 pages
Question 51. Which of the following is a visual pollution?
  1.    Insightfulness of piles of garbage
  2.    Mashing with Adhesives
  3.    Mashing with Fibers
  4.    Flowers
 Discuss Question
Answer: Option A. -> Insightfulness of piles of garbage
Answer: (a).Insightfulness of piles of garbage
Question 52. Which of the following temperature is optimum for incinerators?
  1.    900-1100°C
  2.    100-110°C
  3.    90-110°C
  4.    100-11000°C
 Discuss Question
Answer: Option A. -> 900-1100°C
Answer: (a).900-1100°C
Question 53. Which of the following is an important part of the natural release of biogas in the environment?
  1.    Biogeochemcial cycle
  2.    Environment pollution
  3.    Afforestation
  4.    Deforestation
 Discuss Question
Answer: Option A. -> Biogeochemcial cycle
Answer: (a).Biogeochemcial cycle
Question 54. Which of the following organism degrade the organic matter thereby, transfer the matter to the environment?
  1.    Methanogens
  2.    Manganese
  3.    Carbon dioxide
  4.    Methane
 Discuss Question
Answer: Option A. -> Methanogens
Answer: (a).Methanogens
Question 55. Which of the following methods cannot be used for waste disposal?
  1.    Dumping
  2.    Gasification
  3.    Incineration
  4.    Open sea disposal
 Discuss Question
Answer: Option D. -> Open sea disposal
Answer: (d).Open sea disposal
Question 56. The chemical reaction between the carbon, hydrogen present in the solid waste combines with the oxygen.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 57. Which of the following resembles the rich topsoil in context to solid waste composting?
  1.    Humus
  2.    Bed rock
  3.    Sub soil
  4.    Weathered rock
 Discuss Question
Answer: Option A. -> Humus
Answer: (a).Humus
Question 58. Why recycling of metal is more cost effective?
  1.    Extraction of metal increases
  2.    Increases operating cost
  3.    Reduces operating cost
  4.    Reduces odor
 Discuss Question
Answer: Option C. -> Reduces operating cost
Answer: (c).Reduces operating cost
Question 59. Why mismanagement of battery waste can be harmful?
  1.    Texture
  2.    Heavy metals
  3.    Plastics
  4.    Odor
 Discuss Question
Answer: Option B. -> Heavy metals
Answer: (b).Heavy metals
Question 60. Unrecycled plastic leads to emission of greenhouse gases.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True

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