Question

air pollution from automobiles can be controlled by fitting

Answer 1

Air pollution from automobiles can be controlled by fitting:


A catalytic converter; this is an emission control device that is fitted in the exhaust pipe of automobiles to convert toxic gases and pollutants produced by automobiles to less toxic gases through catalyzing an oxidation and a reduction reaction which is a process known as a redox reaction.

Answer 2

P. C. V. VALVE

E. G. R. VALVE