Which of the following is/are renewable sources of energy?
A.Fall or flow of water
B.Sun
C.Wood
D.All of the above
Category: Environmental Engineering Mcqs
Corrosive action of water could be due to its
A.alkalinity
B.hardness
C.dissolved oxygen
D.Any of the above
For the combustion of 1 kg of carbon, the quantity of oxygen required is
A.2.62 kg
B.3.67 kg
C.8 kg
D.11.6 kg
Which one of the following gases shows a different behaviour at high pressure?
A.Carbon dioxide
B.Water vapours
C.Hydrogen
D.Ozone
All of the following are souhd obsorptive materials EXCEPT:
A.Rugs
B.Mirrors
C.Carpets
D.Heavy drapes
Which pollutants result from automobile exhaust?
A.Carbon monoxide
B.Nitrous oxide
C.Hydrocarbons
D.Sulphur dioxide
E.All of the above
The process used for the removal of dissolved carbondioxide from the water, is known as
A.Coagulation
B.Agitation
C.Aeration
D.Sedimentation
E.Zeolitc
Which of the following chemical is least poisonous?
A.Arsenic
B.Lead
C.Sodium
D.Cyanide
E.Mercury
The presence of which of the following material in water is not considered to be dangerous?
A.Lead
B.Copper
C.Mercury
D.Calcium
E.Zinc
Identify the incorrect statement if any Zeolite process is suitable for
A.Removing temporary hardness
B.Removing permanent hardness
C.Cent percent removal of hardness
D.Acidic waters
E.When zeolite becomes inactive, it may be reactivated by flushing with brine solution
