Correct Option
When ants bite, they inject formic acid into the skin. This organic acid, also known as methanoic acid, is responsible for the characteristic burning and stinging sensation associated with an ant bite. The name 'formic acid' is derived from the Latin word 'formica', meaning ant, as it was first isolated from ants.
Incorrect Options
- Glacial acetic acid: This is a concentrated form of acetic acid, the primary component of vinegar. It is not the substance injected by ants during a bite.
- Methanol: Also known as wood alcohol, methanol is a simple alcohol and is not a component of ant venom.
- Stearic acid: This is a saturated fatty acid commonly found in animal and vegetable fats and oils. It is unrelated to the chemical compounds injected by ants.