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Question
Most hazardous metal pollutant of auto mobile exhaust is
Most hazardous metal pollutant of auto mobile exhaust is
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Solution
The correct option is C Pb
Tetraethyllead is mixed with petrol for improving efficiency of intemal combustion engines of vehicles. Fuel evaporating from fuel tank and carburetors and unburnt fuel from mopeds and motor bikes release compounds of Pb through automobile exhausts and it accumulates as dust. Lead and its compounds accumulate in the soil. They also bio-accumulate but do not biomagnify. They are non-biodegradable. They remain in the soil and enter food chain when crops take them up. Compounds of lead coming out of automobile exhausts enter human through inhalation and skin contact.
Tetraethyllead is mixed with petrol for improving efficiency of intemal combustion engines of vehicles. Fuel evaporating from fuel tank and carburetors and unburnt fuel from mopeds and motor bikes release compounds of Pb through automobile exhausts and it accumulates as dust. Lead and its compounds accumulate in the soil. They also bio-accumulate but do not biomagnify. They are non-biodegradable. They remain in the soil and enter food chain when crops take them up. Compounds of lead coming out of automobile exhausts enter human through inhalation and skin contact.
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