The solution in which gold dissolves is
-
water
-
hydrochloric acid
-
acquaregia
-
sulphuric acid
C
Correct answer
Explanation
Aqua regia is the only solution that can dissolve gold. It is a mixture of concentrated nitric acid and hydrochloric acid in a 1:3 ratio, which produces reactive species that oxidize gold. Neither water nor any single acid like HCl or H2SO4 can dissolve gold.