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Test: Various Other Filters - Civil Engineering (CE) MCQ


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10 Questions MCQ Test - Test: Various Other Filters

Test: Various Other Filters for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Test: Various Other Filters questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Various Other Filters MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Various Other Filters below.
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Test: Various Other Filters - Question 1

In which type of filter, water flows in upward direction?

Detailed Solution for Test: Various Other Filters - Question 1

Explanation: Up flow filter is a rectangular or round shape filter in which water flows in upward direction.

Test: Various Other Filters - Question 2

 In which type of filter, the filtration is done in two opposite directions at the same time?

Detailed Solution for Test: Various Other Filters - Question 2

Explanation: In Bi-flow filter, the filtration is done in the opposite direction at the same time. It is divided into single media and dual media bi-flow filter.

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Test: Various Other Filters - Question 3

 Which material is provided for the down-flow bed in dual media bi-flow filter?

Detailed Solution for Test: Various Other Filters - Question 3

Explanation: In dual media bi-flow filter, coal sand is provided, If the sand is finer than that provided in rapid sand filter, excessive amount of sand will rise into coal bed and sand will become coarser.

Test: Various Other Filters - Question 4

The rate of filtration of a Micro-Strainer is __________ litres / hour.

Detailed Solution for Test: Various Other Filters - Question 4

Explanation: The rate of filtration of a Micro-Strainer is 50,000-80,000 litres per hour. It cannot remove color and other finely divided particles.

Test: Various Other Filters - Question 5

 Which material is provided for the up flow bed in dual media bi-flow filter?

Detailed Solution for Test: Various Other Filters - Question 5

Explanation: Sand is provided for the up-flow bed in dual media bi-flow filter. The quality of effluent obtained from up-flow bed in dual media bi-flow filter is inferior than that of the mixed media filter.

Test: Various Other Filters - Question 6

Which device is used for screening stored water which do not contain microscopic sized particles?

Detailed Solution for Test: Various Other Filters - Question 6

Explanation: Micro-Strainers are stainless steel wire cloth that is used for screening stored water that do not contain algae, plankton and micro sized particles.

Test: Various Other Filters - Question 7

What is the diameter of drum of a Micro-Strainer?

Detailed Solution for Test: Various Other Filters - Question 7

Explanation: The diameter of a drum of Micro-Strainer is 3m and it is 3m wide and single unit of it can deal with about 50,000-80,000 litres/ hour.

Test: Various Other Filters - Question 8

What is the thickness of a layer of a diatomite filter?

Detailed Solution for Test: Various Other Filters - Question 8

Explanation: Diatomite filter consists of a layer of diatomaceous earth, having a thickness of 3mm supported on a filter element called the septum.

Test: Various Other Filters - Question 9

 The diatomite is applied on the septum at the rate of ______ 

Detailed Solution for Test: Various Other Filters - Question 9

Explanation: The diatomite is applied on the septum at the rate of 300gm/m2 to form a precoat of filter media.

Test: Various Other Filters - Question 10

Consider the following statements regarding diatomite filters.
1. They are not used for water having high turbidity.
2. They are not suitable for municipal water supplies.
3. They are not used for temporary and shifting camps.
Which of the above statement is/are false?

Detailed Solution for Test: Various Other Filters - Question 10

Explanation: The diatomite filter is useful for temporary and shifting camps because they require less space, are lighter in weight and are more mobile.

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