Chemical Environmental Engineering

A. Paralysis of muscles & loss of appetite
B. Nervous depression
C. Gastritis and diarrhea
D. All A., B. and C.

A. Air binding
B. Shrinkage of filtering media
C. Mud balls
D. Expansion of filtering media

A. 1 to 2
B. 4 to 5
C. 9 to 10
D. 15 to 20

A. Reduction in strength of leather & cloth
B. Acceleration of corrosion rates of metals
C. Increased drying & hardening time of paints
D. All A., B. and C.

A. Cancer
B. Bronchitis
C. Asphyxiation
D. Corrosion

A. Alum (aluminium sulphate)
B. Lime
C. Ferric chloride
D. Sodium aluminate

A. Hearing loss
B. Rupture of ear drum
C. Nervousness & fatigue
D. All A., B. & C.

A. Colloids or aerosols
B. Powder
C. Dust
D. Smoke

A. Are large shallow artificial lakes also known as clarification lakes, maturation ponds or
oxidation ponds
B. Use micro-organisms/bacteria in presence of dissolved oxygen
C. Gives an excellent final effluent (with 3 to 4 lagoons arranged in series) having suspended
solid < 1 mg/litre and BOD = 3.8 mg/litre
D. All A., B. & C.

A. 3
B. 30
C. 7
D. 70