The active component of Bleaching powder is
**Core Concept**
The active component of bleaching powder is related to its disinfectant properties, which are crucial in water treatment and sanitation. **Bleaching powder**, also known as calcium hypochlorite, is a chemical compound used for its strong oxidizing properties. It is commonly used as a disinfectant.
**Why the Correct Answer is Right**
The correct answer is related to the chemical composition of bleaching powder. **Calcium hypochlorite** (Ca(ClO)_2) is the active component, which releases **hypochlorous acid** (HOCl) when dissolved in water. This acid is the primary disinfectant.
**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it is not the primary active component.
**Option B:** Incorrect as it is not directly related to the disinfectant properties.
**Option D:** Incorrect because, although related to chlorine, it is not the specific compound in bleaching powder.
**Clinical Pearl / High-Yield Fact**
Remember, **hypochlorous acid** is the key disinfectant in bleaching powder, crucial for water sanitation and preventing the spread of infectious diseases.
**Correct Answer:** C. Calcium hypochlorite