Water with least contamination can be be obtained from
A.Rivers
B.Lakes
C.Wells
D.Reservoirs
E.Spring along the hill slope
Category: Environmental Engineering Mcqs
Per capita consumption of water is usually taken as
A.50 – 100 litres
B.150 – 300 litres
C.400 – 500 litres
D.500 – 750 litres
E.750 – 1000 litres
To keep the water safe against pathogenetic bacteria the residual chlorine should remain between
A.0.05 to 0.2 ppm
B.0.2 to 0.8 ppm
C.1 ppm to 2 ppm
D.6 ppm to 10 ppm
E.10 ppm to 20 ppm
Ash content of a diesel fuel should not exceed
A.10%
B.1%
C.0.50%
D.0.01%
Plants that grow in absence of sublight in water, are called
A.Algae
B.Shrubs
C.Fungi
D.Any of the above
E.All of the above
In power plant an electrostatic precipitators is installed between
A.Forced draft fan and furnace
B.Furnace and chimney
C.Primary air and secondary air
D.Induced draft fan and forced draft fan
E.Air preheater and water treatment plant
The rate at which atoms of radioactive sources disintegrate is measured in terms of
A.Cuire
B.Atomic number
C.Wavelength
D.Frequency
The process of kolling at the pathogenic bacteria of water-borne diseases to make it safe for hospital use, is known as
A.Zeoliting
B.Debacterialisation
C.Sterilization
D.Aeration
E.Chlorination
Which one among the following terms best describes the method of converting a spherical surface into a plane surface?
A.Photogrammetry
B.Projection
C.Cartography
D.Geodesy
Carbondioxide has all the following properties EXCEPT that it is :
A.colourless
B.odourless
C.tasteless
D.readily soluble in water
