Which of the following is not true regarding bleaching powder-
**Core Concept**
Bleaching powder, also known as calcium hypochlorite, is a chemical compound used as a disinfectant and sanitizer. It is commonly used for water treatment, laundry, and as a household bleach. The correct answer will be related to its properties or uses.
**Why the Correct Answer is Right**
Bleaching powder is a strong oxidizing agent that releases hypochlorous acid (HOCl) when it comes into contact with water. This hypochlorous acid is responsible for its disinfectant properties, effectively killing bacteria, viruses, and other microorganisms. However, the correct answer will be the statement that does not accurately describe bleaching powder.
**Why Each Wrong Option is Incorrect**
**Option A:** Bleaching powder is used for water treatment, which is true.
**Option B:** Bleaching powder is a strong oxidizing agent, which is also true.
**Option C:** Bleaching powder is not used in food industry as a preservative, which is **true** and not the correct answer.
**Clinical Pearl / High-Yield Fact**
Bleaching powder is a common household item that should be handled with caution due to its strong oxidizing properties, which can cause skin and eye irritation.
**Correct Answer:** C.