The water borne bacterial infections may cause
A.Typhoid fever
B.Dysentery
C.Cholera
D.Any of the above
E.None of the above
Category: Environmental Engineering Mcqs
The number of air changes per hour recommended for auditoria is
A.3 to 6
B.6 to 10
C.10 to 12
D.15 to 20
Which of the following is considered as the noble gas?
A.Oxygen
B.Ozone
C.Hydrogen
D.Argon
The process of passing the water through a thick layer of filtering media is known as
A.Sedimentation
B.Filtration
C.Disinfection
D.Purification
E.Putrification
For controlling algae, the chemical generally used is
A.alum
B.lime
C.copper sulphate
D.bleaching powder
Brackish taste of water is due to
A.Chlorides of sodium
B.Fluorides of sodium
C.Turbidity
D.Dead bacteria
E.Any of the above
Disinfection of drinking water means removal of
A.Turbidity
B.Colour
C.Odour
D.Oxygen
E.Bacteria
Protection from radiations is possible through
A.shielding of source of radiation
B.increased distance from the source of radiation
C.limitation on time of exposure
D.All of the above
The speed of sound will be maximum through
A.Water
B.Alcohol
C.Concrete
D.Aluminium
The colour of water is measured
A.In ferms of pH value
B.In terms of degree of hardness
C.In terms of platinum cobalt scale
D.ppm of dissolved solids
E.None of the above
