Gold is dissolved in

BPSC treated this question as having no correct option (cancelled).

Explanation

Gold does not dissolve in any single common acid. It dissolves in aqua regia, a freshly made mixture of concentrated hydrochloric acid and concentrated nitric acid in the ratio 3 : 1 by volume.

The options give sulphuric acid, nitric acid, a sulphuric–nitric mixture and hydrochloric acid: none of them is correct.