Question

Platinum and palladium catalyst promotes the removal of ____________ of the gaseous HC in the exhaust.

(a) 30-80%

(b) 40-90%

(c) 50-100%

(d) none of the mentioned

I had been asked this question by my college professor while I was bunking the class.

My doubt stems from C.I. Engines topic in division Engine Emissions and their Control of IC Engine

Answer 1

The correct answer is:

(b) 40-90%

Platinum and palladium catalysts are commonly used in catalytic converters for controlling emissions in internal combustion engines. These catalysts promote the removal of 40-90% of the gaseous hydrocarbons (HC) in the exhaust by facilitating oxidation reactions that convert hydrocarbons into carbon dioxide (CO2) and water (H2O).