Correct Option
- Arsenic: This element is a major geogenic contaminant found in groundwater in several Indian states, including West Bengal, Bihar, Uttar Pradesh, and Assam. Its presence is primarily due to natural geological processes, sometimes exacerbated by irrigation practices.
- Fluoride: Naturally occurring in groundwater in various regions of India, such as Rajasthan, Andhra Pradesh, and Odisha. Excessive intake of fluoride through drinking water can lead to health issues like dental and skeletal fluorosis.
- Uranium: Reports indicate the presence of uranium in groundwater in parts of India, notably Punjab. Its origin is often linked to natural geological deposits and can be influenced by the use of phosphate fertilizers in agriculture.
Incorrect Options
- Sorbitol: A sugar alcohol, sorbitol is not a recognized or widespread pollutant in drinking water sources across India. It is primarily used in food products and pharmaceuticals.
- Formaldehyde: While formaldehyde is an industrial chemical and preservative, it is not typically found as a common or widespread contaminant in drinking water in various parts of India. Its presence would usually indicate specific industrial pollution rather than a general environmental issue in drinking water.