Ethyl alcohol is commonly made unfit for drinking by the addition of A. potassium cyanide B. methyl alcohol C. chloroform D. potassium chloride

[amp_mcq option1=”potassium cyanide” option2=”methyl alcohol” option3=”chloroform” option4=”potassium chloride” correct=”option2″]

The correct answer is B. methyl alcohol.

Ethyl alcohol is commonly made unfit for drinking by the addition of methyl alcohol, also known as wood alcohol. Methyl alcohol is a poisonous substance that can cause blindness and death if ingested. It is often used as a denaturant, which is a substance that is added to alcohol to make it unfit for drinking.

Potassium cyanide is a highly toxic substance that can cause death if ingested. It is not commonly used as a denaturant for alcohol.

Chloroform is a colorless, flammable liquid that is used as an anesthetic. It is not commonly used as a denaturant for alcohol.

Potassium chloride is a salt that is used in a variety of applications, including food additives, fertilizers, and pharmaceuticals. It is not commonly used as a denaturant for alcohol.