Question

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

Answer 1

Hint: 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).