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Test: Theory Of Sedimentation - Civil Engineering (CE) MCQ


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10 Questions MCQ Test Environmental Engineering - Test: Theory Of Sedimentation

Test: Theory Of Sedimentation for Civil Engineering (CE) 2024 is part of Environmental Engineering preparation. The Test: Theory Of Sedimentation questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Theory Of Sedimentation MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Theory Of Sedimentation below.
Solutions of Test: Theory Of Sedimentation questions in English are available as part of our Environmental Engineering for Civil Engineering (CE) & Test: Theory Of Sedimentation solutions in Hindi for Environmental Engineering course. Download more important topics, notes, lectures and mock test series for Civil Engineering (CE) Exam by signing up for free. Attempt Test: Theory Of Sedimentation | 10 questions in 25 minutes | Mock test for Civil Engineering (CE) preparation | Free important questions MCQ to study Environmental Engineering for Civil Engineering (CE) Exam | Download free PDF with solutions
Test: Theory Of Sedimentation - Question 1

When impurities are separated by the gravitation of settling particles, the operation is called _____

Detailed Solution for Test: Theory Of Sedimentation - Question 1

Explanation: In plain sedimentation, impurities are separated from a suspending fluid by use of natural forces like gravitational forces..

Test: Theory Of Sedimentation - Question 2

In which type of settling, sedimentation of discrete particles takes place?

Detailed Solution for Test: Theory Of Sedimentation - Question 2

Explanation: In Discrete settling, sedimentation of discrete particles takes place where the particles have little tendency to flocculate..

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Test: Theory Of Sedimentation - Question 3

In which settling type, dilute suspension of particles takes place?

Detailed Solution for Test: Theory Of Sedimentation - Question 3

Explanation: In this type of settling, particle mass increase and it settle down due to flocculation.

Test: Theory Of Sedimentation - Question 4

In which type of sedimentation, flocculent suspension of intermediate concentration takes place?

Detailed Solution for Test: Theory Of Sedimentation - Question 4

Explanation: In type III sedimentation, inter-particle forces hold the particle together and flocculent suspension of intermediate concentration takes place..

Test: Theory Of Sedimentation - Question 5

In which type of sedimentation, flocculent suspension of high concentration takes place?

Detailed Solution for Test: Theory Of Sedimentation - Question 5

Explanation: In type IV sedimentation, flocculent suspension of high concentration takes place and particles comes in contact with each other resulting in the formation of structure..

Test: Theory Of Sedimentation - Question 6

What is the settling velocity of the particle if its diameter is 2 * 10-3cm. Given G=2.65, viscosity v=8 * 10-3cm2/Sec? 

Detailed Solution for Test: Theory Of Sedimentation - Question 6

Explanation: Settling velocity of the particle is given by vs=g (G-1) d2/18v
Specific gravity G=1, g=981cm2/Sec, viscosity v=8 * 10-3cm2/Sec
vs = 981* (2.65-1) *0.002*0.002/(18*.008) = 0.13cm/Sec..

Test: Theory Of Sedimentation - Question 7

In a rectangular horizontal flow tank, the maximum permissible velocity is ____ m/Sec.

Detailed Solution for Test: Theory Of Sedimentation - Question 7

Explanation: In the rectangular tank, the ideal conditions are that the flow is horizontal, velocity is uniform in all directions and the maximum permissible limit of velocity is .03m/Sec..

Test: Theory Of Sedimentation - Question 8

 The time period for which the water is stored in a sedimentation tank is called _____

Detailed Solution for Test: Theory Of Sedimentation - Question 8

Explanation: Detention period is the time period at which the water is stored in a tank. It varies for different purposes like in the septic tank or oxidation pond, its value is higher..

Test: Theory Of Sedimentation - Question 9

 Settling velocity of a spherical body in a viscous fluid is given by

Detailed Solution for Test: Theory Of Sedimentation - Question 9

Explanation: According to Stokes law, settling velocity of the particle is given by
vs=g (G-1) d2/18v where G is the specific gravity, d is the diameter of spherical particles and v is the viscosity..

Test: Theory Of Sedimentation - Question 10

 In a fill and draw type sedimentation tank, a detention period of ____ hours is provided.

Detailed Solution for Test: Theory Of Sedimentation - Question 10

Explanation: In this tank, water is detained for 24 hours. Then cleaning is done for 6-12 hours, so, the whole cycle of operations takes around 30-36 hours..

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