A. Coal mining
B. Limestone mining
C. Textile
D. Asbestos
A. Aluminium sulphate
B. Ferrous sulphate
C. Hydrated lime
D. Chloramine
A. Forestation
B. Rain
C. Green house effect
D. Vegetation
A. Food industry
B. Municipal sewage treatment
C. Petroleum refinery
D. Iron & steel plant
A. Dilution with inert material
B. Discharging to atmosphere through tall stacks after dilution
C. Disposing off in rivers & oceans
D. Filling in steel crates and shooting it off out of earth’s gravity
A. Acetylene
B. Petrol vapor
C. Hydrogen
D. Carbon monoxide
A. Respiratory ailments (e.g. bronchitis)
B. Skin diseases (e.g. dermatitis)
C. Silicosis
D. Blurred vision