Question 21 : When the impurities are separated by the gravitation of settling particles, the operation is called ______
1. Sedimentation with coagulant
2. Plain sedimentation
3. Secondary sedimentation
4. Disinfection
View Answer   Discuss with Members

Question 22 : The deviation from the ideal flow of wastewater in the sedimentation tank causes
1. Whirlpool
2. Increase in tank efficiency
3. Short circuiting
4. Coagulation
View Answer   Discuss with Members

Question 23 : Which of the following is correctly paired?
1. C – Impeller
2. D – Outlet
3. F – Deflecting wall
4. E – Impeller
View Answer   Discuss with Members

Question 24 : The settling velocity of spherical particle is given by
1. Darcy Weisbach equation
2. Hazen and William equation
3. Stokes equation
4. Bernoulli's equation
View Answer   Discuss with Members

Question 25 : In which type of sedimentation,the flocculent suspension of high concentration takes place?
1. Type I sedimentation
2. Type II sedimentation
3. Type III sedimentation
4. Type IV sedimentation
View Answer   Discuss with Members

Question 26 : Which of the following represents the coagulant pipe?
1. A
2. B
3. C
4. D
View Answer   Discuss with Members

Question 27 : The test for finding the optimum coagulant dose in water is
1. Chromatography
2. Jar test
3. Kjeldahl test
4. Dilatancy test
View Answer   Discuss with Members

Question 28 : In which type of sedimentation, the flocculent suspension of the intermediate concentration takes place?
1. Type I sedimentation
2. Type II sedimentation
3. Type III sedimentation
4. Type IV sedimentation
View Answer   Discuss with Members

Question 29 : The detention period of a flash mixer is
1. 2 minutes
2. 30 minutes
3. 1 hour
4. 2 hours
View Answer   Discuss with Members

Question 30 : 'C' in the following figure represents the ________
1. Impeller
2. Impeller shaft
3. Deflecting wall
4. Flash mixer wall
View Answer   Discuss with Members