Bee sting leaves an acid which causes pain and irritation. The acid released is

A bee sting injects an acidic liquid into the skin, which causes pain, redness, and irritation [1][3]. This acidic substance is identified as methanoic acid, commonly known as formic acid [2]. Methanoic acid is the simplest carboxylic acid and is a characteristic component of the venom in various Hymenoptera species, including ants and bees [3]. While the venom of wasps is typically alkaline and can be neutralized by ethanoic acid (vinegar), bee and ant stings are acidic and are traditionally treated with mild bases like baking soda to neutralize the effect [1][2][3]. Other organic acids mentioned in the options, such as tartaric acid (found in tamarind), citric acid (found in citrus fruits), and ethanoic acid (found in vinegar), are not the primary irritants in bee stings [2].

Sources

1. [1] Science , class X (NCERT 2025 ed.) > Chapter 2: Acids, Bases and Salts > Self defence by animals and plants through chemical warfare > p. 27
2. [3] Science-Class VII . NCERT(Revised ed 2025) > Chapter 2: Exploring Substances: Acidic, Basic, and Neutral > 2.3 Neutralisation in Daily Life > p. 18
3. [2] Science , class X (NCERT 2025 ed.) > Chapter 2: Acids, Bases and Salts > Table 2.3 Some naturally occurring acids > p. 28