A.Sulphuric acid alone
B.Nitric acid alone
C.Nitrous acid and sulphurous acid
D.Sulphuric acid, sulphurous acid nitric acid and, nitrous acid
A.Sulphuric acid alone
B.Nitric acid alone
C.Nitrous acid and sulphurous acid
D.Sulphuric acid, sulphurous acid nitric acid and, nitrous acid