Process of Filtration

This set of MCQs helps students to learn about filtration defined as the process in which solid particles in a liquid or gaseous fluid are removed by the use of a filter medium that permits the fluid to pass through but retains the solid particles.

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Which of the following statement is wrong regarding filtration?

It removes fine particle It removes suspended solids not removed by sedimentation It does not remove turbidity It removes color

Which of the following statement is wrong regarding filtration?

It removes fine particle It removes suspended solids not removed by sedimentation It does not remove turbidity It removes color

In which action of filtration, particles coarser than the void size is arrested?

Mechanical Straining Sedimentation Biological mechanism Electrolytic action

In which action of filtration, colloidal particles are removed?

Mechanical Straining Sedimentation Biological mechanism Electrolytic action

Which is the first zone of purification in a sand bed?

Autotrophic zone Heterotrophic zone Schmutzdecke zone Electrolytic zone

In which action of filtration, removal of particulate matter takes place?

Mechanical Straining Sedimentation Biological mechanism Electrolytic action

In which type of filter, rate of filtration is low?

Slow sand filter Rapid sand filter Gravity filter Pressure filter

What is the color of the surface coating formed during the filtration process?

White Brown Green Reddish brown

In the ________ zone of purification in filter media, bacteria oxidizes the organic matter completely.

Autotrophic Heterotrophic Schmutzdecke Electrolytic

The filtration rate of a slow sand filter is _____ litres of water per square metre.

20 30 50 100

Identify the correct statement from the following options.

Rapid sand filter has a high initial cost Coagulation is essential in slow sand filter Slow sand filter requires skilled supervision Period of cleaning of Rapid sand filter is 1-2 days

Which of the following is not commonly used as a filter material in the treatment of water?

Sand Anthracite Crushed rock Garnet sand

Which of the following is correct regarding the cheapest filter material used in water treatment?

Sand>Anthracite>Garnet sand SandGarnet sand Sand Sand=Anthracite>Garnet sand

What is CU in the expression CU= D60/D10 where D60 and D10 are the sizes of particle such that 60% and 10% of the particles are finer than these sizes respectively?

Coefficient of compaction Coefficient of consolidation Uniformity coefficient Effective size

What is the value of specific gravity of sand filter?

2 2.6 3.1 3.5

The value of specific gravity for Garnet sand is ____.

2.1

3.6

4.2

5.1

Quiz/Test Summary

Title: Process of Filtration

Questions: 16

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