Category: Environmental Engineering Mcqs

A.250 mg/litre
B.100 mg/litre
C.50 mg/litre
D.20 mg/litre
E.1 mg/litre

A.increases with a decrease in pH
B.increases with a increase in pH
C.decreases with a decrease in pH
D.decreases with an increase in pH

A.Improves coagulation
B.Reduces odours
C.Reduces organisms
D.All of the above
E.None of the above

A.Multifuel engine
B.Wankel engines
C.Free piston gas generator
D.Dual fuel engines

A.sulphur dioxide
B.particulate matter
C.Hydrocarbons
D.All of the above

A.hardness of water
B.carbonates of water
C.sulphates in water
D.Acidity of water

A.Purification of water
B.Preventing decaying of teeth
C.Deodourisation of water
D.Reduces fungi formation
E.Killing aerobic bacteria

A.Aeration
B.Alum coagulation
C.Phosphate coagulation
D.Lime
E.Lime – Soda solution

A.Crushing
B.Grinding
C.Detonation
D.Rapid impact
E.Any of the above processes

A.Water is hard
B.Water is acidic
C.Water is alkaline
D.Organic matter is present in water
E.Chlorine content is high in water