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Test: Chemical Clarification


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10 Questions MCQ Test Environmental Engineering | Test: Chemical Clarification

Test: Chemical Clarification for Chemical Engineering 2022 is part of Environmental Engineering preparation. The Test: Chemical Clarification questions and answers have been prepared according to the Chemical Engineering exam syllabus.The Test: Chemical Clarification MCQs are made for Chemical Engineering 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Chemical Clarification below.
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Test: Chemical Clarification - Question 1

 Which of the following represents the coagulant pipe?

Detailed Solution for Test: Chemical Clarification - Question 1

Explanation: ‘A’ represents the coagulant pipe which is used for discharging the coagulant into the flash mixer.

Test: Chemical Clarification - Question 2

  Which of the following represents the device which is used for sludge removal?

Detailed Solution for Test: Chemical Clarification - Question 2

Explanation: ‘D’ represents the drain valve which is used for the removal of sludge from the mixer.

Test: Chemical Clarification - Question 3

 _________ is the average of velocities at a point over a definite period of time.

Detailed Solution for Test: Chemical Clarification - Question 3

Explanation: Temporal mean velocity is the average of velocities at a point over a definite period of time. It is represented by G.

Test: Chemical Clarification - Question 4

 Which of the following goes to the flocculation tank?

Detailed Solution for Test: Chemical Clarification - Question 4

Explanation: ‘B’ represents the outlet of the mixer which goes to the flocculation tank.

Test: Chemical Clarification - Question 5

Which of the following is the correct expression regarding temporal mean velocity? 

Detailed Solution for Test: Chemical Clarification - Question 5

Explanation: Temporal mean velocity G = (P/μV) 1/2, where P is the power, μ is the dynamic viscosity and V is the volume of the tank. It is measured in per second.

Test: Chemical Clarification - Question 6

Which of the following is correctly paired?

Detailed Solution for Test: Chemical Clarification - Question 6

Explanation: E represents the Impeller which is driven by the electric motor to revolve in the tank.

Test: Chemical Clarification - Question 7

The speed of impeller in a flash mixer is

Detailed Solution for Test: Chemical Clarification - Question 7

Explanation: The speed of impeller in a flash mixer is between 100 to 120 rpm and the propeller type impeller is used.

Test: Chemical Clarification - Question 8

 ‘C’ in the following figure represents the ________

Detailed Solution for Test: Chemical Clarification - Question 8

Explanation: ‘C’ represents the deflecting wall, whereas the boundary below the inlet and outlet of the tank is the flash mixer wall.

Test: Chemical Clarification - Question 9

The detention period of a flash mixer is

Detailed Solution for Test: Chemical Clarification - Question 9

Explanation: The detention period of flash mixer lies between 30 seconds to 2 minutes.

Test: Chemical Clarification - Question 10

 Which of the following represents the impeller shaft?

Detailed Solution for Test: Chemical Clarification - Question 10

Explanation: Impeller is connected to impeller shaft which is further connected to electric motor so as to drive the impeller and mixing of coagulant in water takes place.

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