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Test: Various Unit Operations - Civil Engineering (CE) MCQ


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11 Questions MCQ Test - Test: Various Unit Operations

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

In which unit operation, gases are released or absorbed in water?

Detailed Solution for Test: Various Unit Operations - Question 1

Explanation: In Gas transfer, gases are released or absorbed in water by exposing the water through aeration under normal, increased or reduced pressure.

Test: Various Unit Operations - Question 2

How many types of aerators are commonly used in the treatment of water?

Detailed Solution for Test: Various Unit Operations - Question 2

Explanation: There are 4 types of aerators namely Gravity aerators, Spray aerators, Diffusers and Mechanical aerators.

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Test: Various Unit Operations - Question 3

Which of the following process is used to remove the colloidal particles from water?

Detailed Solution for Test: Various Unit Operations - Question 3

Explanation: Chemical coagulation is used to remove colloidal particles by the use of coagulants which increase the particle size and they settle down.

Test: Various Unit Operations - Question 4

Flocculation of iron from water by addition of lime is an example of which of the following process?

Detailed Solution for Test: Various Unit Operations - Question 4

Explanation: Chemical precipitation removes the dissolved substance from water through ion transfer where precipitation of dissolved impurities takes place.

Test: Various Unit Operations - Question 5

In which unit operation objectionable solutes are converted into unobjectionable forms without removal?

Detailed Solution for Test: Various Unit Operations - Question 5

Explanation: In solute stabilization, water is stabilized by chlorination or liming so that objectionable solutes are converted into unobjectionable form.

Test: Various Unit Operations - Question 6

 In which form of solute stabilization, hydrogen sulfide in water is oxidized into sulfate?

Detailed Solution for Test: Various Unit Operations - Question 6

Explanation: By the process of chlorination, water gets stabilized by the conversion of hydrogen sulfide into sulfate.

Test: Various Unit Operations - Question 7

Which form of solute stabilization occurs when water passes through limestone?

Detailed Solution for Test: Various Unit Operations - Question 7

Explanation: When water passes through limestone, carbon dioxide in excess get converted into soluble bicarbonate.

Test: Various Unit Operations - Question 8

In which process, excess lime is converted into bicarbonate?

Detailed Solution for Test: Various Unit Operations - Question 8

Explanation: By Re-carbonation of water softened by excess lime treatment, excess lime is converted into bicarbonate.

Test: Various Unit Operations - Question 9

 By which process, odour producing substances is oxidized?

Detailed Solution for Test: Various Unit Operations - Question 9

Explanation: By addition of chlorine dioxide to water, odour producing substances are oxidized.

Test: Various Unit Operations - Question 10

Solids are removed from the water by which of the following unit operation?

Detailed Solution for Test: Various Unit Operations - Question 10

Explanation: During solids transfer, solids are removed from water by straining, sedimentation, flotation and filtration.

Test: Various Unit Operations - Question 11

Organic contaminants are removed from the water by the process of ______

Detailed Solution for Test: Various Unit Operations - Question 11

Explanation: Organic contaminants are removed from the water by the attraction and accumulation of one substance on the surface of another.

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