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MCQs

Total Questions : 88 | Page 7 of 9 pages
Question 61. Grease should not be allowed to enter the normal drainage system.
  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. _______ is used to clean blockage in the line.
  1.    Lateral chamber
  2.    Main chamber
  3.    Inspection chamber
  4.    Sewer chamber
 Discuss Question
Answer: Option C. -> Inspection chamber
Answer: (c).Inspection chamber
Question 63. What is the recommended slope ratio for soil water pipes?
  1.    1:12
  2.    1:20
  3.    1:30
  4.    1:40
 Discuss Question
Answer: Option D. -> 1:40
Answer: (d).1:40
Question 64. What is the size of rain water pipe?
  1.    25 mm
  2.    50 mm
  3.    75 mm
  4.    100 mm
 Discuss Question
Answer: Option C. -> 75 mm
Answer: (c).75 mm
Question 65. H₂S gas is _______ to generate sulphuric acid.
  1.    Oxidised
  2.    Reduced
  3.    Oxidised and reduced
  4.    Sulphonated
 Discuss Question
Answer: Option A. -> Oxidised
Answer: (a).Oxidised
Question 66. _______ corrodes internal walls of sewers.
  1.    Hydrochloric acid
  2.    Sulphuric acid
  3.    Sulphur dioxide
  4.    Carbon dioxide
 Discuss Question
Answer: Option B. -> Sulphuric acid
Answer: (b).Sulphuric acid
Question 67. H₂S gas is denser than air.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 68. H₂S is intoxicant in nature.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 69. What is the odour threshold limit of H₂S gas?
  1.    0.0008 ppm
  2.    0.008 ppm
  3.    0.08 ppm
  4.    0.8 ppm
 Discuss Question
Answer: Option B. -> 0.008 ppm
Answer: (b).0.008 ppm
Question 70. What amount of H₂S causes increased eye problems?
  1.    1 ppm
  2.    2 ppm
  3.    3 ppm
  4.    4 ppm
 Discuss Question
Answer: Option D. -> 4 ppm
Answer: (d).4 ppm

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