The chemical substance present in calamine solution that is applied on the skin to neutralise the effect of ant bite is –

Question

Accepted Answer

The chemical substance present in calamine solution that is applied on the skin to neutralize the effect of an ant bite is zinc carbonate, which is Option 2. Here is a detailed explanation supporting this choice:

1. **Why Option 2 is Correct (Zinc Carbonate):**
   - Calamine lotion is a well-known topical treatment used to relieve itching and irritation caused by insect bites, including ant bites. The primary active ingredient in calamine lotion is zinc carbonate, often combined with a small amount of ferric oxide to give it a pink color.
   - Zinc carbonate acts as a mild astringent and antiseptic, which helps to soothe the skin and reduce irritation and itching. Its ability to neutralize the acidic venom from ant bites makes it effective in providing relief.
   - The soothing and protective properties of zinc carbonate make it an ideal choice for treating minor skin irritations and insect bites, which is why it is the correct answer.

2. **Why the Other Options are Incorrect:**
   - **Option 1: Calcium Carbonate**
     - Calcium carbonate is not used in calamine lotion. It is primarily used as an antacid to relieve heartburn and indigestion. It does not have the astringent or soothing properties required to treat skin irritations from ant bites.
   
   - **Option 3: Sodium Carbonate**
     - Sodium carbonate, also known as washing soda, is a highly alkaline substance used in cleaning products. It is not suitable for application on the skin, especially for treating insect bites, as it can cause irritation and damage to the skin.
   
   - **Option 4: Sodium Hydroxide**
     - Sodium hydroxide is a strong base used in industrial cleaning and manufacturing processes. It is highly corrosive and can cause severe burns if applied to the skin. It is not used in any skin treatment products, including calamine lotion, due to its harmful effects.

In conclusion, zinc carbonate is the correct and safe ingredient in calamine lotion that helps neutralize the effects of ant bites, providing relief from itching and irritation.