Sail E0 Webinar

MCQs

Total Questions : 88 | Page 3 of 9 pages
Question 21. Which of these pollutants is removed by Dissolved air floatation?
  1.    Free oil
  2.    Emulsified oil
  3.    Both free and emulsified oil
  4.    Only grease
 Discuss Question
Answer: Option B. -> Emulsified oil
Answer: (b).Emulsified oil
Question 22. What is dispersed air floatation used to remove?
  1.    Emulsified oil and suspended solids
  2.    Free oil and suspended solids
  3.    Emulsified oil
  4.    Free oil
 Discuss Question
Answer: Option A. -> Emulsified oil and suspended solids
Answer: (a).Emulsified oil and suspended solids
Question 23. What portion of the Dissolved air floatation effluent is recycled?
  1.    70-80%
  2.    80-90%
  3.    30-50%
  4.    15-20%
 Discuss Question
Answer: Option D. -> 15-20%
Answer: (d).15-20%
Question 24. What is the pressure supplied for a dissolved air flotation process?
  1.    1-2 bar
  2.    5-7 bar
  3.    2.75-3.75 bar
  4.    9.75-12.75 bar
 Discuss Question
Answer: Option C. -> 2.75-3.75 bar
Answer: (c).2.75-3.75 bar
Question 25. Which of these chemicals is not used during Dissolved air floatation?
  1.    Aluminium Salts
  2.    Ferric salts
  3.    Activated silica
  4.    Magnesium salts
 Discuss Question
Answer: Option D. -> Magnesium salts
Answer: (d).Magnesium salts
Question 26. Which of the following methods are not used for the dispersion of the effluent out of a septic tank?
  1.    Wetlands
  2.    Soak pit
  3.    Evapo-transpiration mound
  4.    Leach field
 Discuss Question
Answer: Option A. -> Wetlands
Answer: (a).Wetlands
Question 27. Which of the following reasons is correct with respect to the need of providing baffle walls?
  1.    Mixing of scum and wastewater
  2.    Settling of heavy particles
  3.    Increase velocity of the liquid
  4.    Prevent scum and solids from escaping
 Discuss Question
Answer: Option D. -> Prevent scum and solids from escaping
Answer: (d).Prevent scum and solids from escaping
Question 28. What is the amount of water used per person per day for flushing?
  1.    2-3 L
  2.    3-10 L
  3.    4-30 L
  4.    5-40 L
 Discuss Question
Answer: Option D. -> 5-40 L
Answer: (d).5-40 L
Question 29. The first chamber in a septic tank should be at least ______ of the total length.
  1.    10 %
  2.    20 %
  3.    35 %
  4.    50 %
 Discuss Question
Answer: Option D. -> 50 %
Answer: (d).50 %
Question 30. During the disposal of the sludge, it must be ______
  1.    Liquefied
  2.    Dried
  3.    Burned
  4.    Fluidized
 Discuss Question
Answer: Option B. -> Dried
Answer: (b).Dried

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

DSP Combined 1 Free Revision Test SAIL JO E-0
GPOE / GPA Combined 1 Free Revision Test SAIL JO E-0
BSP Plant Specific Review Test SAIL JO E-0
BSL Combined 1 Free Revision Test SAIL JO E-0
GFM Combined 1 Free Revision Test SAIL JO E-0