Chemical Environmental Engineering

A. 5
B. 100
C. 250
D. 500

A. 50
B. 1000
C. 2000
D. 5000

A. Organic
B. Fatty
C. Inorganic
D. Dissolved

A. Respiratory ailments (e.g. bronchitis)
B. Skin diseases (e.g. dermatitis)
C. Silicosis
D. Blurred vision

A. Chlorination
B. Treating in biological oxygen pond
C. Chemical coagulation
D. None of these

A. 30 to 70 kV DC
B. 30 to 70 kV AC
C. 230 V AC
D. 230 V DC

A. 10
B. 45
C. 90
D. 115

A. Hydrogen sulphide
B. Mercury
C. Cadmium
D. Asbestos

A. Forest fire
B. Deforestation
C. Volcanic eruption
D. None of these

A. Fading of dyes on textiles
B. Corrosion, tarnishing & soiling of metals
C. Reduced strength of textiles
D. All A., B. and C.