The condition that is required for simultaneous treatment of CO HC...

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The condition that is required for simultaneous treatment of CO, HC and NOx in a three way catalytic is

A. Combustion within a narrow margin of the stoichiometric air-fuel ratio

B. Combustion with a fairly lean air-fuel mixture

C. Combustion with a fairly rich air-fuel mixture

D. A catalyst temperature not exceeding 200°C at any time

Answer: Option A

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