Chemical Environmental Engineering

A. Ferrous sulphate
B. Alum
C. Lime
D. Hydrazine

A. 100
B. 1000
C. 400
D. 4000

A. Poor visibility due to sky darkening
B. Irritation in eyes
C. Respiratory trouble
D. All A., B. and C.

A. Forestation
B. Rain
C. Green house effect
D. Vegetation

A. 0.1 to 1
B. 3 to 6
C. 10 to 15
D. 15 to 20

A. Industrial chimney exhaust
B. Forest fire
C. Automobiles exhaust
D. Photochemical oxidation of organic matter

A. Incineration
B. Biological oxidation
C. Composting
D. None of these

A. SO2 & SO3
B. NO2
C. NH3
D. CO

A. Filtration
B. Digestion
C. Sedimentation
D. Both B. and C.

A. Quenching of hot coke
B. Discharging in the river stream
C. Filtration and recycling for cooling coke oven gas
D. None of these