Asked in ETEA MDCAT 2016 2016

Which statement is correct for three way catalytic converter:

Correct answer: D. All of the above

  • A. Reduces emission of unburnt HC's
  • B. Reduces pollutants
  • C. Oxidize pollutant like CO
  • D. All of the above

Explanation

The correct statement is ALL OF THE ABOVE. A three-way catalytic converter is a device that is used to reduce emissions from internal combustion engines. It does this by using a catalyst to speed up chemical reactions that convert harmful pollutants into less harmful substances. The three main pollutants that a three-way catalytic converter reduces are: Nitrogen oxides (NOx): These are formed when nitrogen and oxygen in the air react at high temperatures. NOx can cause respiratory problems and contribute to smog. Carbon monoxide (CO): This is a colorless, odorless gas that is produced when fuel is not burned completely. CO can reduce the amount of oxygen in the blood, which can lead to headaches, dizziness, and even death. Hydrocarbons (HC): These are compounds that contain hydrogen and carbon. HC can contribute to smog and can also be harmful to human health. A three-way catalytic converter uses a combination of platinum, palladium, and rhodium to speed up the reactions that convert these pollutants into less harmful substances. The catalyst works by providing a surface on which the reactions can occur more easily. The three-way catalytic converter is a very effective way to reduce emissions from internal combustion engines. It can reduce NOx emissions by up to 90%, CO emissions by up to 95%, and HC emissions by up to 99%.

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