David is a hardworking environmentalist who has to travel 10 kilometres to his office daily. He drives to and fro from his destination in a sedan which releases a substantial amount of vehicular exhaust into the atmosphere . This concerns David due to the growing pollution in city . Which of the following measures can he take to reduce the emission of pollutants from his car ?

Options

A. Platinum catalytic converter with unleaded petrol
B. Platinum - palladium catalytic converter with leaded petrol
C. Platinum - palladium catalytic converter with unleaded petrol
D. Platinum catalytic converter with leaded petrol

Answer

To solve the problem of reducing the emission of pollutants from David's car, we can follow these steps:

### Step 1: Understand the Problem
David is concerned about the pollution caused by his car's emissions as he travels daily to work. He needs to find a way to reduce these emissions.

**Hint:** Identify the main source of pollution in this scenario - it's the car's emissions.

### Step 2: Identify the Options
The options provided include different combinations of catalytic converters and types of petrol (leaded vs. unleaded).

**Hint:** Look for the components that are known to reduce emissions effectively.

### Step 3: Understand Catalytic Converters
Catalytic converters are devices that reduce harmful emissions from vehicles. They contain precious metals like platinum, palladium, and rhodium that act as catalysts to convert harmful gases into less harmful substances.

**Hint:** Remember that the effectiveness of a catalytic converter can be influenced by the type of fuel used.

### Step 4: Evaluate the Fuel Types
Leaded petrol can deactivate the catalyst in a catalytic converter, making it less effective. Unleaded petrol is preferred because it does not contain lead, allowing the catalytic converter to function properly.

**Hint:** Focus on which type of petrol will maintain the effectiveness of the catalytic converter.

### Step 5: Analyze the Options
- **Platinum catalytic converter with unleaded petrol:** This is a good option as unleaded petrol will not deactivate the catalyst.
- **Platinum palladium catalytic converter with leaded petrol:** This is not a good option because leaded petrol will deactivate the catalyst.
- **Platinum palladium catalytic converter with unleaded petrol:** This is a good option as both components are effective.
- **Platinum catalytic converter with leaded petrol:** This is not a good option for the same reason as above.

**Hint:** Eliminate the options that contain leaded petrol.

### Step 6: Choose the Best Option
The best option for David to reduce emissions is the "Platinum palladium catalytic converter with unleaded petrol" because it combines effective catalytic materials with the appropriate type of fuel.

**Final Answer:** The correct measure David can take to reduce the emission of pollutants from his car is to use a **Platinum palladium catalytic converter with unleaded petrol**.