Skip to content
Civil Vedant

Civil Vedant

The Online Civil Engineering Portal

  • Articles
    • Materials & Construction
    • WRE & Irrigation
    • Geotechnical
    • Transportation
    • Environment
    • Safety
  • Multiple Choice Questions
    • Civil Engg.
    • Materials
    • Environment Engg.
    • Fluid Mechanics
    • Soil Mechanics
    • RCC & Steel
    • Survey
    • Hydrology & Irrigation
    • Transportation Engg.
  • Jobs
  • Toggle search form

Environmental Engineering | MCQ – 02 | 20 MCQs

Posted on July 3, 2021March 8, 2023 By Civil Vedant

Q.1) The vertical wells provided along the banks of a river to draw ground water in dry season are called :

A) Open wells

B) Tube wells

C) Artesian wells

D) Infiltration wells

Answer

Option (D)

Q.2) The yield of the well depends upon the –

A) Permeability of the soil

B) Position of water table

C) Depth of well in impervious layer

D) All of the above

Answer

Option (D)

Q.3) The presence of calcium and magnesium chloride in water causes –

A) Softening

B) Bad taste

C) Hardness

D) Turbidity

Answer

Option (C)

Q.4) The odour of water can be determined by –

A) Thermometer

B) Osmoscope

C) Jackson’s turbidimeter

D) Barometer

Answer

Option (B)

Q.5) The maximum permissible chloride content in water for domestic supplies should not exceed –

A) 250 ppm

B) 350 ppm

C) 450 ppm

D) 550 ppm

Answer

Option (A)

Q.6) The pH value of water for public supplies is limited from :

A) 2.5 to 6.5

B) 6.5 to 8

C) 8 to 10.5

D) 10.5 to 15

Answer

Option (B)

Q.7) The bacteria which can survive without oxygen is called –

A) Anaerobic bacteria

B) Pathogenic bacteria

C) Aerobic bacteria

D) Non-pathogenic bacteria

Answer

Option (A)

Q.8) Copper Sulphate is the most common chemical used for controlling –

A) Bacteria

B) Algae

C) Silt

D) Mineral matter

Answer

Option (B)

Q.9) In a plain sedimentation tank, under normal conditions, impurities are removed upto :

A) 20%

B) 50 %

C) 60%

D) 70%

Answer

Option (D)

Q.10) The alum when mixed with water as a coagulant –

A) Does not effect pH value of water

B) Decreases pH value of water

C) Increases pH value of water

D) None of the above

Answer

Option (B)

Q.11) The sand used for filtration, should not loose weight more than……..when placed in hydrochloric acid for 24 Hrs.

A) 2.5%

B) 5%

C) 7.5%

D) 10%

Answer

Option (B)

Q.12) Slow sand filter is efficient to remove the bacterias from the raw water to an extent of :

A) 50%

B) 70%

C) 85%

D) 99%

Answer

Option (D)

Q.13) Cleaning of rapid sand filter is done by –

A) Scraping the top layer of filter media

B) Back washing

C) Providing new sand layers

D) None of the above

Answer

Option (B)

Q.14) The process of killing pathogenic bacterias from water is called –

A) Sedimentation

B) Filtration

C) Coagulation

D) Disinfection

Answer

Option (D)

Q.15) The most commonly used disinfectant for drinking water is –

A) Alum

B) Nitrogen

C) Lime

D) Chlorine

Answer

Option (D)

Q.16) The apparatus used for feeding chlorine into water is called –

A) Chlorine tank

B) Chlorinator

C) Aeration fountain

D) None of the above

Answer

Option (B)

Q.17) When the chlorine is added beyond the break point, the process of treating the water is known as –

A) Plain chlorination

B) Post-chlorination

C) Dechlorination

D) Super-chlorination

Answer

Option (D)

Q.18) The permanent hardness of water can be removed by –

A) Boiling

B) Lime process

C) Lime-soda process

D) Zeolite process

Answer

Option (D)

Q.19) A reflux valve is also known as –

A) Safety valve

B) Scour valve

C) Air valve

D) Check valve

Answer

Option (D)

Q.20) The suitable layout of distribution system for well planned cities is –

A) Dead end system

B) Ring system

C) Radial system

D) Grid iron system

Answer

Option (B)

Share
Environment Engg. Tags:civil engg previous years questions, civil engineerig objective, civil engineering questions for interview, environmental engineering mcqs

Post navigation

Previous Post: Surveying | MCQ – 02 | 20 MCQs
Next Post: Civil Engineering || MCQ – 11 || 20 MCQs

More Related Articles

free civil mcqs Environmental Engineering | MCQ – 07 | 20 MCQs Environment Engg.
Environmental Engineering || MCQ – 04 || 20 MCQs Environment Engg.
Environmental Engineering | MCQ – 01 | 20 MCQs Environment Engg.
free civil engg objectives Environmental Engineering | MCQ – 09 | 20 MCQs Environment Engg.
Environmental Engineering | MCQ – 05 | 20 MCQs Environment Engg.
EE06 Environmental Engineering | MCQ – 06 | 20 MCQs Environment Engg.
  • Home
  • Disclaimer
  • Privacy Policy
  • Contact Us
  • About
  • DMCA

Copyright © CivilVedant. All Rights Reserved. All logos and trademarks belong to their respective owners.

Image by macrovector on Freepik

Copyright © 2023 Civil Vedant.

Powered by PressBook Blog WordPress theme