The becteria that can survive without oxygen is called
A.Facultative bacteria
B.Anerobic bacteria
C.Aerobic bacteria
D.Furobic bacteria
E.All of the above
Category: Environmental Engineering Mcqs
Turbidity of water is usually measured in terms of
A.Sodium scale
B.Silica scale
C.Cobalt scale
D.Platinum scale
E.Calcium scale
Small concentrations of fluorides in water
A.reduce the prevalence of dental caries
B.increase the prevalence of dental carries
C.cause irritation in eyes
D.do not arm in any way
Half life period for carbon 14 is nearly
A.1.2 days
B.5.73 days
C.5.73 years
D.5730 days
Lead is a cumulative poison which ends up in
A.eyes
B.eyes and ears
C.bones and tissues
D.legs and hands
All of the following pollutants affect heart EXCEPT :
A.Cadmium
B.Arsenic
C.Lead
D.Carbon monoxide
Normally the colour of exhaust from a diesel engine is
A.black
B.white
C.yellow
D.reddish
