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MCQs

Total Questions : 132 | Page 7 of 14 pages
Question 61. The materials that are left after the successful separation of the valuable fraction from the ore is called as Tailings.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 62. Tailings suspended in the water can damage the environment by releasing toxic metals.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 63. Solidification is based on __________
  1.    CO₂ release
  2.    Time consumption
  3.    Consume lots of energy
  4.    Encapsulation
 Discuss Question
Answer: Option D. -> Encapsulation
Answer: (d).Encapsulation
Question 64. Biological method of soil remediation includes __________ of contaminants.
  1.    Vitrification
  2.    Transformation
  3.    Bio-leaching
  4.    Removal
 Discuss Question
Answer: Option B. -> Transformation
Answer: (b).Transformation
Question 65. What is the significance of green image?
  1.    Bio-magnification
  2.    Soil remediation using biological method
  3.    Soil remediation using chemical method
  4.    lyophilization
 Discuss Question
Answer: Option B. -> Soil remediation using biological method
Answer: (b).Soil remediation using biological method
Question 66. What is the major advantage of biological method of soil remediation?
  1.    Destruction of organic compound
  2.    Don’t remove organic compounds
  3.    Adds toxic compounds
  4.    Infects the soil
 Discuss Question
Answer: Option B. -> Don’t remove organic compounds
Answer: (b).Don’t remove organic compounds
Question 67. Which of the following is a drawback of biological method of soil remediation?
  1.    Contaminants may not be conducive
  2.    Residual effects of human activities
  3.    Biological contaminants
  4.    Non-Biological contaminants
 Discuss Question
Answer: Option A. -> Contaminants may not be conducive
Answer: (a).Contaminants may not be conducive
Question 68. Which of the following might require secondary treatment?
  1.    Biological method
  2.    Chemical method
  3.    Quorum quenching
  4.    Lyophilization
 Discuss Question
Answer: Option B. -> Chemical method
Answer: (b).Chemical method
Question 69. On-site soil remediation is called as ________
  1.    Acidification
  2.    Conformational protection
  3.    Global warming
  4.    In-situ technique
 Discuss Question
Answer: Option D. -> In-situ technique
Answer: (d).In-situ technique
Question 70. Which of the following uses high temperature to fuse contaminants?
  1.    Chemical Testing method
  2.    Most probable number method
  3.    Dissolved Oxygen method
  4.    Vitrification
 Discuss Question
Answer: Option D. -> Vitrification
Answer: (d).Vitrification

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