The defluoridations process of drinking water developed by the NEERI is popularly known as?
**Core Concept**
The defluoridation process is a method used to remove excess fluoride from drinking water, which is essential to prevent **fluorosis**, a condition caused by excessive intake of fluoride. The National Environmental Engineering Research Institute (NEERI) has developed a technique for this purpose.
**Why the Correct Answer is Right**
Although the specific details of the correct answer are not provided, the NEERI defluoridation process is likely based on chemical or physical methods to remove fluoride ions from water, such as **precipitation**, **adsorption**, or **ion exchange**. These methods involve the use of chemicals or materials that bind to fluoride ions, making it possible to remove them from the water.
**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific details, it's challenging to provide a precise reason, but incorrect options typically involve unrelated processes or technologies.
**Option B:** Similarly, without the correct context, it's difficult to pinpoint the exact flaw, but it might involve a different water treatment process.
**Option C:** This option might be incorrect due to being unrelated to the NEERI's work on defluoridation.
**Option D:** This could be an incorrect answer because it does not pertain to the NEERI's method for defluoridating water.
**Clinical Pearl / High-Yield Fact**
It's crucial to remember that excessive fluoride consumption can lead to **dental fluorosis** and **skeletal fluorosis**, making defluoridation of water a significant public health measure, especially in areas where the natural fluoride content in water is high.
**Correct Answer:** Correct Answer: D. Nalgonda Technique