Sulphur Dioxide Present In The Industrial Chimney Exhaust Gases Causes___________________

A. Respiratory & lung disease
B. Reduction in plant’s productivity owing to acid rain
C. Corrosion of building materials
D. All A., B. and C.

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

A. Turbidity B. Odour C. Hardness D. Bacteria...

A. Foaming from boilers B. Its dissolved oxygen content C. Its silica content D. Caustic embrittlement...

A. Sludge disposal B. Reduction of excessive flow in sewers C. Biological treatment of wastes D. None of these...

A. Foodstuffs B. Woolen clothes C. Metallic powder D. None of these...

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