1. What is Alkalinity of water?

[A] It is the presence of ions in water that will neutralize hydrogen ions
[B] It is the measure of ability of water to neutralize hydroxides
[C] It is the measure of ability of water to neutralize carbonates
[D] It is the measure of ability of water to neutralize oxygen

Answer: Option A


2. The drop manholes are provided in sewerage system when there is _____.

[A] change in size of sewers
[B] change in the elevation of ground level
[C] change in alignment of sewer line
[D] change from gravity system to pressure system

Answer: Option B

 

3. The removal of dissolved organic matter occurs in ______.

[A] dual media filters
[B] rapid sand filters
[C] slow sand filters
[D] trickling filters

Answer: Option D


4. The concentration of hardness producing cations may be estimated using _____.

[A] pH meter
[B] Spectrophotometer
[C] Flame photometer
[D] Conductivity meter

Answer: Option B

 

5. Which of the following valve is also known as non-return valve?

[A] Air Valve
[B] Scour Valve
[C] Sluice Valve
[D] Check Valve

Answer: Option D

ENVIRONMENTAL ENGINEERING MCQs

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