Question

Tincture of iodine is:
A.Iodine in water
B.Iodine in alcohol
C.Iodine in sugar
D.Iodine in kerosene

Answer 1

Tincture of iodine is used to clean wounds to prevent bacterial growth. Tincture solutions are characterized by the presence of alcohols in them.

Complete step by step answer:
Tincture of iodine is a solution of $2 - 7\%$ elemental iodine along with potassium or sodium iodide, dissolved in a mixture of ethanol and water. In a typical 100 mL formulation, $1.8$ to $2.2$ grams of elemental iodine is present, $2.1$ to $2.6$ grams of sodium iodide, $50{\text{ mL}}$ of ethanol and the rest of the volume is adjusted by purified water. This $2\%$ elemental iodine solution has about $1{\text{ mg}}$ of free iodine per drop.
There is also a strong Tincture of iodine in which each $100{\text{ mL}}$ of the solution has about $6.8$ to $7.5$ gram of iodine and $4.7$ to $5.5$ gram of potassium iodide. Purified water is added upto $50{\text{ mL}}$ and the rest of the volume is made up of alcohol. This is a highly concentrated tincture of iodine.

So, the correct answer is option B.

Note:
-Tincture of iodine is mainly found in first-aid kits to clean wounds and cuts so as to prevent bacterial growth in them.
-It is also used to sanitize water for drinking purposes.
-The surfaces of fruits and vegetables are also cleaned using this portion to kill the virus and bacteria on the surface of the fruits and vegetables.
-The common concentration used for sanitization is 25 parts per million (ppm).