Theory Test Practice Ireland

Question 524 · Car theory test

What is the purpose of a catalytic converter?

Pick an answer to test yourself.

Correct answer

To reduce harmful exhaust emissions.

Official explanation

Catalytic converters are part of a vehicle's exhaust system. They help to protect the environment by removing up to 75% of the carbon monoxide, nitrogen oxide, and hydrocarbons from the vehicle's exhaust.

Topic
Vehicle maintenance

Practise this topic in the app

Free demo questions for every topic, progress saved, a full mock exam in the official format.

Got it wrong, or had to think? That is one of 805 questions the car theory test can draw from. Sit the car mock exam in the official format (40 questions, 45 minutes, pass mark 35) and see how many more you would miss.

Related questions

This question in other languages