Question

In vehicles, catalytic converters are used to

• A. To increase the mileage of vehicles
• B. To convert ${\mathbf{CO}}_{\mathbf{2}}$ into carbonates
• C. To increase the efficiency of lead mixed petrol
• D. To convert CO to ${\mathbf{CO}}_{\mathbf{2}}$

Answer 1

The correct option is D

To convert CO to ${\mathbf{CO}}_{\mathbf{2}}$

The correct option is D.

Explanation for the correct option:

Option D:

1. Vehicular pollution can be controlled by installing a catalytic converter in automobiles.
2. It consists of expensive metals such as palladium, platinum, and rhodium that act as catalysts.
3. When the vehicular discharge passes through the catalytic converter, the unburnt hydrocarbons found in it are converted into water and carbon dioxide.
4. Nitric oxide and carbon monoxide released from catalytic converters are converted into nitrogen gas and carbon dioxide respectively.

Explanation for the incorrect options:

Option A:

The mileage of the car depends on the engine of the car.

Option B:

Catalytic converters cannot convert ${\mathbf{CO}}_{\mathbf{2}}$ to carbonates.

Option C:

The efficiency of lead petrol cannot be increased by using a catalytic converter.

Final answer: In vehicles, catalytic converters are used to convert CO to ${\mathbf{CO}}_{\mathbf{2}}$.