Which of the following is a man-made source of air pollution ?
A). Automobile exhaust
B). Forest fire
C). Bacterial action in soil and swamp areas
D). All of the above
White lung cancer is caused by
A). Asbestos
B). Silica
C). Textiles
D). Paper
Which of the following in automobile exhaust can cause cancer?
A). Oxides of nitrogen
B). Carbon monoxide
C). Lead
D). Polyclinic hydrocarbons
Higher concentration of nitrogen dioxide in atmosphere air causes
A). Cancer
B). Bronchitis
C). Asphyxiation
D). Corrosion
Which of the following appeared to be with a significant potential for accumulation through food chains ?
A). DDT
B). Parathion
C). Lindane
D). Carbaryl