What is tincture of iodine ?

Options

A. 0.2 to 0.4 ppm aqueous solution of chlorine
B. `2-3 %` aqueous solution of `CH_(3)COOH`
C. `2-3%` solution of iodine is alcohol`-`water
D. None of these

Answer

**Step-by-Step Solution:**

1. **Definition of Tincture of Iodine**: Tincture of iodine is a solution that contains iodine (I2) dissolved in a mixture of alcohol and water. It is commonly used as an antiseptic.

2. **Concentration of Iodine**: The typical concentration of iodine in tincture of iodine is about 2 to 3 percent. This means that for every 100 mL of the solution, there are 2 to 3 grams of iodine.

3. **Components of Tincture**: The solution is made by dissolving iodine in ethanol (alcohol) and water. The alcohol helps to dissolve the iodine and also acts as a preservative.

4. **Uses of Tincture of Iodine**: Tincture of iodine is primarily used for its antiseptic properties. It is applied to cuts, wounds, insect bites, or scratches to prevent infection by inhibiting microbial growth.

5. **Conclusion**: Therefore, tincture of iodine is a 2-3% solution of iodine in a mixture of alcohol and water, and it is used as an antiseptic.

**Final Answer**: Tincture of iodine is a 2-3% solution of iodine in alcohol and water, used as an antiseptic.

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