Multiple choice

Which of the following cannot reduce air pollution?

  1. Industries using CNG

  2. Catalytic convertor used in automobiles

  3. STPs

  4. Unleaded petrol in vehicles

  5. Thermal power plants using electrostatic precipitator

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 Sewage Treatment Plants (STPs) are meant to reduce water polution.