Sail E0 Webinar

MCQs

Total Questions : 90 | Page 2 of 9 pages
Question 11. The sludge digestion process is independent of which of the following?
  1.    Temperature of sludge
  2.    pH of sludge
  3.    Shape of tank
  4.    Mixing of sludge
 Discuss Question
Answer: Option C. -> Shape of tank
Answer: (c).Shape of tank
Question 12. Which of the following activated sludge process has minimum food to microorganism ratio?
  1.    Extended aeration
  2.    Step aeration
  3.    Modified aeration
  4.    Conventional
 Discuss Question
Answer: Option A. -> Extended aeration
Answer: (a).Extended aeration
Question 13. Which of the following is the correct expression of the aeration period in hours?
  1.    V/Q
  2.    24V/Q
  3.    V/24Q
  4.    Q/V
 Discuss Question
Answer: Option B. -> 24V/Q
Answer: (b).24V/Q
Question 14. The organic loading in an activated sludge plant is defined as ___________
  1.    Mass of BOD per day/Volume of the aeration tank
  2.    Volume of aeration tank/Mass of BOD per day
  3.    The mass of BOD per day/Volume of secondary clarifier
  4.    Aeration period * Volume of aeration tank
 Discuss Question
Answer: Option A. -> Mass of BOD per day/Volume of the aeration tank
Answer: (a).Mass of BOD per day/Volume of the aeration tank
Question 15. The maximum aeration period for a conventional activated sludge system is ___________
  1.    2 hours
  2.    3 hours
  3.    4 hours
  4.    6 hours
 Discuss Question
Answer: Option D. -> 6 hours
Answer: (d).6 hours
Question 16. The design Hydraulic loading rate of the gravity thickener is _______ m³/m²/day.
  1.    20
  2.    39
  3.    40
  4.    85
 Discuss Question
Answer: Option A. -> 20
Answer: (a).20
Question 17. Which of the following is not used for drying of sludge?
  1.    Multiple effect evaporation
  2.    Dual effect evaporation
  3.    Rotary dryer
  4.    Spray dryer
 Discuss Question
Answer: Option B. -> Dual effect evaporation
Answer: (b).Dual effect evaporation
Question 18. 7% of solids concentration of thickened sludge is obtained from gravity thickener. What is the type of sludge?
  1.    Primary sludge
  2.    Secondary sludge
  3.    Tertiary sludge
  4.    Activated sludge
 Discuss Question
Answer: Option D. -> Activated sludge
Answer: (d).Activated sludge
Question 19. Which of the following process is not involved in sludge thickening?
  1.    Gravity thickening
  2.    Vacuum filter
  3.    Air flotation
  4.    Centrifugation
 Discuss Question
Answer: Option B. -> Vacuum filter
Answer: (b).Vacuum filter
Question 20. In which of the following method, the sludge is rotated for dewatering process?
  1.    Centrifugation
  2.    Drying lagoon
  3.    Drying bed
  4.    Vacuum filter
 Discuss Question
Answer: Option A. -> Centrifugation
Answer: (a).Centrifugation

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

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI
Tabulation - Test Paper 2 Data Interpretation Reasoning & DI
Test Paper 1 Direction Sense Test Reasoning & DI
ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0
GFM Combined 1 Free Revision Test SAIL JO E-0