According to the roadmap , the goal of the Euro III norms is to reduce. ……....(a) .....to …...(b) ….... ppm in petrol and diesel .

Options

A. a - carbon monoxide , b - 60
B. a - sulphur , b - 50
C. a - lead , b - 60
D. a - carbon monoxide , b - 50

Answer

To solve the question regarding the Euro III norms and the reduction goals for petrol and diesel, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understand the Context**: The question refers to the Euro III norms, which are environmental standards aimed at reducing harmful emissions from vehicles.

2. **Identify the Key Components**: The question specifically mentions the reduction of certain pollutants in petrol and diesel. The primary pollutants of concern under these norms are sulfur and aromatic hydrocarbons.

3. **Recall Previous Standards**: According to the Euro II norms, the sulfur content in diesel was reduced to 350 ppm and in petrol to 150 ppm.

4. **Determine Euro III Standards**: For Euro III norms, the target is to further reduce the sulfur content in both petrol and diesel. The goal is to reduce sulfur to 50 ppm in both types of fuel.

5. **Fill in the Blanks**: Based on the information gathered:
- (a) The pollutant being reduced is **sulfur**.
- (b) The target level for reduction is **50 ppm**.

6. **Final Answer**: According to the roadmap, the goal of the Euro III norms is to reduce **sulfur (a)** to **50 ppm (b)** in petrol and diesel.