Nalgonda technique is related to______ content in water
**Core Concept**
The Nalgonda technique is a method used to reduce the fluoride content in drinking water to prevent fluorosis, a condition caused by excessive fluoride intake. This technique involves the addition of certain chemicals to the water to precipitate out the excess fluoride ions.
**Why the Correct Answer is Right**
The Nalgonda technique is specifically designed to reduce the fluoride content in water by adding aluminum sulfate (alum) and lime to the water. The alum reacts with the fluoride ions to form aluminum fluoride, which precipitates out of the solution, thereby reducing the fluoride content. This process is effective in removing excess fluoride from the water, making it safe for consumption.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the Nalgonda technique is not related to removing arsenic or lead content from water.
**Option B:** This option is incorrect because the Nalgonda technique is not a method for desalination of water.
**Option C:** This option is incorrect because the Nalgonda technique is not related to removing heavy metals from water.
**Clinical Pearl / High-Yield Fact**
The Nalgonda technique is a simple and cost-effective method for reducing fluoride content in water, making it an essential tool in public health initiatives to prevent fluorosis.
**Correct Answer:** C. removing fluoride content in water