Chemical Environmental Engineering

A. Dermatitis (skin disorder)
B. Cancer
C. Asphyxiation
D. Asthma

A. Smog & ozone
B. Hydrogen fluoride & nitrogen oxides
C. Sulphur dioxide & spray of weed killers
D. Carbon monoxide

A. Embrittlement & decrease of folding resistance of paper
B. Cracking of rubber products
C. Fading of dye on textiles
D. Damage of electrical insulator on high tension power line

A. CO, SO2 & H2S
B. CO2, NO & SO3
C. CO2, H2S & NO2
D. SO3, NO2 & CO2

A. Coal ash
B. Potassium cyanide
C. Ortho-xylene
D. None of these

A. Hydrochloric acid
B. Lime
C. Copper sulphate
D. Sodium sulphate

A. Evaporation & chemical precipitation
B. Biological methods & adsorption in ion exchange materials
C. Fixing into a solid mass with cement and sinking deep in the sea
D. All A., B. & C.

A. Nitric acid making
B. Nitrogenous fertiliser
C. Detergent
D. Any of these

A. 5
B. 100
C. 1000
D. 2000

A. Sedimentation tank
B. Circular clarifier
C. Mechanical flocculation
D. Chemical coagulation