The pollution in a city like Delhi may be controlled to a great extent

Options

A. by proper sewage and proper exit of chemicals from factories
B. by wide roads and factories away from the city
C. by cleaning city and scanty use of pesticides
D. all the above

Answer

### Step-by-Step Solution:

1. **Understanding the Problem**: The question asks how pollution in a city like Delhi can be controlled. Delhi is known for its severe air pollution, which is a significant environmental issue.

2. **Option Analysis**:
- **Option 1**: Proper sewage management and proper disposal of chemicals from factories.
- **Explanation**: Effective sewage management prevents contamination of water bodies and reduces the spread of pollutants. Proper disposal of chemicals ensures that harmful substances do not enter the air or water systems, thereby controlling pollution levels.

- **Option 2**: Wide roads and relocating factories away from the city.
- **Explanation**: Wider roads can reduce traffic congestion, which in turn decreases the amount of exhaust emissions from vehicles. Relocating factories outside the city limits minimizes the release of industrial pollutants into urban air, contributing to cleaner air quality.

- **Option 3**: Cleaning the city and reducing pesticide use.
- **Explanation**: Regular cleaning of urban areas helps in reducing litter and pollution. Additionally, minimizing the use of pesticides can prevent chemical runoff into water bodies, which can lead to further pollution.

3. **Conclusion**: Each of the options presented contributes to controlling pollution in a city like Delhi. Therefore, the correct answer is that all the options (proper sewage management, wide roads, relocating factories, cleaning the city, and reducing pesticide use) can help in controlling pollution.

### Final Answer:
All of the above measures can help control pollution in a city like Delhi.

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