Which of the following acid is also known as oil of vitriol?
Sulphuric acid
Sulphuric acid is rightly called the ‘King of Chemicals’ because there is no other manufactured compound which is used by such a large number of key industries.
In the later Middle Ages, it was obtained as an oily viscous liquid by heating crystals of green vitriol, and was, therefore, known by the name of oil of vitriol.