Question

Catalytic converters are fitted into automobiles to reduce the emission of harmful gases. Catalytic converters change unburnt hydrocarbons into
a) Carbon dioxide and water
b) Carbon monoxide
c) Methane
d) Carbon dioxide and methane

Answer 1

Hint: Air pollution is caused due to emission of gases from automobiles and industries. These gases get accumulated in the atmosphere and are not released into outer space which causes heating of the planet as well as an increase in the level of pollution.

Complete answer:
The catalytic converters are used in automobiles to reduce the amount of air pollution caused by the gas released by the burning of petroleum. The unburnt hydrocarbons are released into the atmosphere which is the leading cause of air pollution. So, to reduce air pollution catalytic converters are fitted into automobiles and they help in reducing the production of harmful gases. The harmful gases or the unburnt hydrocarbons are changed into carbon dioxide and water. They are changed by the help of the catalyst like rhodium and platinum. Carbon monoxide released by the vehicle is also changed into carbon dioxide before its emission with the help of the catalytic converter. This insertion of catalytic converters in the exhaust of the vehicle helps in the curbing of air pollution by significant levels. Another way to reduce air pollution by vehicle is the installation of CNG in diesel and petrol running cars. CNG is an eco-friendly alternative to diesel and petroleum.

So, the answer is ‘carbon dioxide and water’.

Note: The catalytic converters are the most useful way to reduce air pollution caused by vehicles. Installation of catalytic converters in the exhaust of the vehicles helps change the harmful gases into carbon dioxide and water with the help of catalysts like rhodium and platinum.