Q. 15.0( 1 Vote )
Use of lead-free petrol or diesel is recommended to reduce the pollutants emitted by automobiles. What role does lead play?
Vehicles are fitted with catalytic converters which use expensive heavy metals, like platinum-palladium and rhodium, as catalysts. These catalytic converters help in reduction of emission of poisonous gases and conversion of unburnt hydrocarbons into carbon dioxide and water.
If leaded petrol is used in such vehicles then the lead in the petrol inactivates the catalysts and causes the emission of unburnt hydrocarbons into the atmosphere which will result into air pollution.
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Looking at the deteriorating air quality because of air pollution in many cities of the country, the citizens are very much worried and concerned about their health. The doctors have declared health emergency in the cities where the air quality is very severely poor.
(a) Mention any two major causes of air pollution.
(b) Write any two harmful effects of air pollution to plants and humans.
(c) As a captain of your school Eco-club, suggest any two programmes you would plan to organise in the school to bring awareness among the students on how to check air pollution in and around the school.Biology - Board Papers
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