Multiple choice

Which of the following does not cause air pollution?

  1. Thermal power station

  2. Hydroelectric plant

  3. Nuclear plant

  4. Cement factories
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Thermal power stations burn fossil fuels releasing CO2 and particulates. Nuclear plants produce radioactive waste (though minimal air pollution during normal operation). Cement factories release significant dust and CO2. Hydroelectric plants, however, use flowing water to generate electricity without combustion or emissions - they don't cause air pollution.

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