Name the acid which is produced by the sting of an ant.

Name the chemical which is injected into the skin of a person : (a) During an ant's sting (b) During the nettle leaf sting.

Name the chemical which is injected into the skin of a person when an ant bites.

The acid which enters the body by the sting of bee is

Name the gas that is produced in the following case: Sulphur is oxidized by concentrated nitric acid.

The sharp pain caused by the sting of an ant is due to

Name an acid which produced in our stomach, how is it useful?

Name two acids produced by using Aspergillus niger?

Name the acid present in the stinging hairs of nettle leaves.