Chemical Environmental Engineering

A. 1
B. 25
C. 150
D. 650

A. Foaming
B. Odour nuisances
C. Undesirable plant growth
D. Turbidity

A. Photochemical smog
B. Sulphur dioxide
C. Nitrogen dioxide
D. Dust particles

A. A primary pollutant
B. A secondary pollutant
C. Impervious to ultra-violet rays
D. Both B. and C.

A. Sterilisation
B. Aeration
C. Disinfection
D. None of these

A. 10-7
B. 7 × 10-7
C. 107
D. 7 × 107

A. Automobile exhaust
B. Blanketing effect of CO2 in the atmosphere
C. De-forestation
D. Thickening of ozone layer

A. Ionosphere
B. Troposphere
C. Stratosphere
D. None of these

A. Skin disorder
B. Bronchitis
C. Bone disease
D. Cancer

A. 10
B. 200
C. 1000
D. 2000