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catalytic converters come in two types: —————— and ——————.

a. reduction; carbonized
b. oxidizing; reduction
c. carbonized; optimized
d. complex; simple

Explanation:

Catalytic converters are devices used in vehicles to reduce harmful emissions. They work through chemical reactions. Oxidizing catalytic converters convert carbon monoxide (\(CO\)) and un - burned hydrocarbons (\(HC\)) into carbon dioxide (\(CO_2\)) and water (\(H_2O\)) by adding oxygen (oxidation). Reduction catalytic converters reduce nitrogen oxides (\(NO_x\)) by removing oxygen (reduction). The other options:

• Option a: Carbonized is not a type related to the basic chemical reaction types of catalytic converters.
• Option c: Carbonized and optimized are not the standard chemical - reaction - based types.
• Option d: Complex and simple do not describe the fundamental chemical processes (oxidation and reduction) that catalytic converters use.

Answer:

B. Oxidizing; reduction