Which acid does not show coagulation necrosis on contact?
HC1
H,SO4
HF
HNO3
Ans: C. HF(Ref Reddy 34/e p493, 33/e p530; Principles of Clinical Toxicology 3/e p220; Forensic Pathology 3/ep241, 110).HF does not show coagulation necrosis on contact.Hydrofluoric acid causes liquefaction necrosis.