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MCQs

Total Questions : 129 | Page 9 of 13 pages
Question 81. The permissible dose of chloride in domestic sewage is __________
  1.    120ppm
  2.    10ppm
  3.    1ppm
  4.    250ppm
 Discuss Question
Answer: Option A. -> 120ppm
Answer: (a).120ppm
Question 82. Imhoff cone is used to measure the _______
  1.    Suspended solids
  2.    Settleable solids
  3.    Dissolved solids
  4.    Total solids
 Discuss Question
Answer: Option B. -> Settleable solids
Answer: (b).Settleable solids
Question 83. Which of the following disease is caused due to lack of nitrates?
  1.    Diphtheria
  2.    Methemoglobinemia
  3.    Tuberculosis
  4.    Meningitis
 Discuss Question
Answer: Option B. -> Methemoglobinemia
Answer: (b).Methemoglobinemia
Question 84. The decomposition of sewage takes place, causing a pungent smell. Which of the following causes the pungent smell?
  1.    CO₂
  2.    H₂SO₄
  3.    HCL
  4.    H₂S
 Discuss Question
Answer: Option D. -> H₂S
Answer: (d).H₂S
Question 85. The maximum quantity of dissolved oxygen present in wastewater is called __________
  1.    Saturated dissolved oxygen
  2.    Maximum dissolved oxygen
  3.    Optimal dissolved oxygen
  4.    Peak dissolved oxygen
 Discuss Question
Answer: Option A. -> Saturated dissolved oxygen
Answer: (a).Saturated dissolved oxygen
Question 86. Identify the odd one of the following.
  1.    Fatty acids
  2.    Chlorides
  3.    Cellulose
  4.    Fats
 Discuss Question
Answer: Option B. -> Chlorides
Answer: (b).Chlorides
Question 87. The fresh sewage is acidic 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 88. Which of the following is an end product formed from both the aerobic and anaerobic decomposition of organic matter?
  1.    NO₃
  2.    CH₄
  3.    H₂S
  4.    CO₂
 Discuss Question
Answer: Option D. -> CO₂
Answer: (d).CO₂
Question 89. The aerobic decomposition of carbonaceous organic matter gives __________
  1.    Nitrites and water
  2.    Carbon dioxide and water
  3.    Sulfates and water
  4.    Nitrogen and Ammonia
 Discuss Question
Answer: Option B. -> Carbon dioxide and water
Answer: (b).Carbon dioxide and water
Question 90. The expression of relative stability at 37°C is given by ___________
  1.    S = (1-(0.794)ᵀ³⁷)
  2.    S = 100 (1-(0.794)ᵀ³⁷)
  3.    S = 1-(0.794)ᵀ²⁰
  4.    S = 100 (1-(0.630)ᵀ³⁷)
 Discuss Question
Answer: Option D. -> S = 100 (1-(0.630)ᵀ³⁷)
Answer: (d).S = 100 (1-(0.630)ᵀ³⁷)

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