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MCQs

Total Questions : 129 | Page 13 of 13 pages
Question 121. Identify the incorrect statement from the following?
  1.    High odor intensity indicates odorless water
  2.    Fresh sewage is odorless
  3.    Turbidity can be measured by turbidity rod
  4.    NTU is a unit of turbidity
 Discuss Question
Answer: Option A. -> High odor intensity indicates odorless water
Answer: (a).High odor intensity indicates odorless water
Question 122. The odor quality of Amines is __________
  1.    Rotten egg
  2.    Fishy
  3.    Fecal matter
  4.    Decayed cabbage
 Discuss Question
Answer: Option B. -> Fishy
Answer: (b).Fishy
Question 123. _______ indicates the freshness of sewage.
  1.    Turbidity
  2.    Color
  3.    Temperature
  4.    COD
 Discuss Question
Answer: Option B. -> Color
Answer: (b).Color
Question 124. ______ represents the number of dilutions required to reduce odor.
  1.    Dispersion
  2.    Threshold odor number
  3.    BOD
  4.    COD
 Discuss Question
Answer: Option B. -> Threshold odor number
Answer: (b).Threshold odor number
Question 125. The odor quality of compound is ammoniacal. Identify the type of compound from the following options.
  1.    Acetic acid
  2.    Benzene
  3.    Ammonia
  4.    Methane
 Discuss Question
Answer: Option C. -> Ammonia
Answer: (c).Ammonia
Question 126. What is the minimum quantity of dissolved oxygen that should be present in the treated sewage?
  1.    6ppm
  2.    4ppm
  3.    1ppm
  4.    10ppm
 Discuss Question
Answer: Option B. -> 4ppm
Answer: (b).4ppm
Question 127. The wastewater from the kitchen is an example of __________
  1.    Black water
  2.    Yellow water
  3.    Green water
  4.    Grey water
 Discuss Question
Answer: Option D. -> Grey water
Answer: (d).Grey water
Question 128. The temperature of sewage increases. What will be the effect on the dissolved oxygen in sewage?
  1.    Remains constant
  2.    Increase
  3.    Decrease
  4.    No effect
 Discuss Question
Answer: Option C. -> Decrease
Answer: (c).Decrease
Question 129. The type of wastewater from the flushing operation of toilet is __________
  1.    Green water
  2.    Red water
  3.    Black water
  4.    Brown water
 Discuss Question
Answer: Option C. -> Black water
Answer: (c).Black water

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