Category: Environmental Engineering Mcqs

A.Temperature of liquid
B.Volume of the liquid
C.Surface area of the liquid
D.Surface winds over the liquid

A.Bakeries
B.Book binding
C.Confectionary factory
D.Clothing factory

A.Arsenic
B.Lead
C.Mercury
D.Cyanide
E.Organic phosphorous compounds

A.Nitrous oxide
B.Carbon dioxide
C.Carbon monoxide
D.Unburnt oil
E.Unburnt carbon

A.An inorganic compound
B.A compound of phosphours
C.A chlorinated hydrocarbon
D.A naturally occurring chemical
E.None of the above

A.A naturally occurring salt
B.Hydread silica
C.Silicon carbide
D.Hydrated calcium silicate
E.Hydrated alumino-silicate

A.Filtration
B.Agitation
C.Flotation
D.Aeration
E.Screening

A.Water is filtered
B.Water is boiled
C.Alum is added to water
D.Lime is added to water
E.Chlorine is passed through water

A.1 to 50 ppm
B.50 to 100 ppm
C.100 to 250 ppm
D.250 to 500 ppm
E.500 to 1000 ppm

A.acidic
B.alkaline
C.neutral
D.free from oxygen