A. Thermal power plant
B. Automobile
C. Radioactive power plant
D. Hydroelectric power plant
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The correct answer to the question: "Pollution is not caused by:" is "Hydroelectric power plant".
A. Thermal power plant
B. Automobile
C. Radioactive power plant
D. Hydroelectric power plant
A. Phosphene
B. SiF4
C. Dust
D. Halogens
A. Phosphate rock only
B. Agricultural fertilizers only
C. Sewage and phosphate rock
D. Sewage and agricultural fertilizers
A. CFC, CH4 and SO2
B. Sulphates of Na, Ca and Fe
C. Fly ash
D. All of these
A. Chlorides
B. Cyanides
C. Fluorides
D. Nitrates
A. Phosphene
B. Nitrogen
C. Hydrogen
D. Nerve gas VX
A. Automobile exhausts
B. Radioactive substances
C. Smoke
D. All of the above
A. Hot water from power plants
B. Hot chemicals from industries
C. Waste from mines
D. Waste from agricultural fields
A. Sewage and industrial effluents
B. Household detergents and pesticides
C. Automobile exhausts and chemicals from industry
D. Sewage and pesticides
A. O3
B. CO
C. CO2
D. N2
A. Thermal power plant
B. Diesel engine
C. Hydroelectric power station
D. Pollen grain
The correct answer to the question: "Pollution is not caused by:" is "Hydroelectric power plant".
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