Question

Which vehicle does not pollute the environment ?
A.Cycle
B.Bus
C.Aeroplane
D.None of these

Answer 1

Hint: As we know, pollution is caused by certain gases that are suspended in the air because of burning of fossil fuels or natural gas . Hence the vehicle which does not cause pollution should be the one which does not release any harmful gases .

Complete step by step answer:
When the environment is polluted, that is, it is contaminated with substances that are harmful for organisms to inhale , it is called air pollution.
The substances which pollute the air are known as pollutants.
The major causes of air pollution are vehicular emissions, gases from factories and machineries, smog, that is, fog mixed with smoke , CFCs from refrigerators and ACs and more.
The most hazardous substances are suspended particulate matter or SPM which have a size of 2.5 micron and less.
This can be easily inhaled by organisms and can badly affect the lungs.
The gases released into the air through vehicles also constitute a major part of air pollutants.
The smoke is emitted by vehicles which run on LPG ,for example, cars, buses, trucks.
The best means to control this air pollution is the use of vehicles which do not emit smoke whenever possible , that is , cycles.
So option A is correct.


Note:
We should use vehicles that do not pollute the environment because pollution is increasing day by day and so we should try our best to minimize the use of things which cause pollution .