Lead pollution in Indian cities had been mainly due to

Options

A. electronic gadgets
B. automoblies
C. batteries
D. lead pencils

Answer

**Step-by-Step Text Solution:**

1. **Understanding Lead Pollution**: Lead pollution refers to the presence of lead in the environment, which can have harmful effects on human health and the ecosystem. It is primarily caused by human activities.

2. **Identifying Sources of Lead**: The main sources of lead pollution include:
- Metal processing
- Use of leaded fuels in automobiles and aviation
- Lead-containing products like batteries and electronic gadgets

3. **Analyzing the Options**:
- **Electronic Gadgets**: While some electronic gadgets may contain lead, they are not the primary source of lead pollution in cities.
- **Automobiles**: The automobile industry has historically used lead in various components, especially in lead-acid batteries. This is a significant contributor to lead pollution.
- **Batteries**: Lead-acid batteries are indeed a source of lead pollution, but they are primarily used in automobiles.
- **Lead Pencils**: Lead pencils do not contribute to lead pollution, as they contain graphite, not lead.

4. **Conclusion**: Based on the analysis, the main contributor to lead pollution in Indian cities is the automobile industry, specifically through the use of lead in batteries and leaded fuels.

**Final Answer**: Lead pollution in Indian cities had been mainly due to **automobiles**.

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