Characteristic postmortem finding of carbolic acid poisoning is: (A) Grunish stomach, (B) Yellow charred stomach, (C) Brown leathery stomoch, (D) Black charred stomach
Answer is C. Stomach mucosa :

Sulphuric acid : Charred / Black  / blottin paper stomach
Copper sulphate : Bluish green
Ferrous sulphate : Green
Arsenic : pink velvety mucosa / strawberry
Nitric acid : yellow
Carbolic acid : White leathery stomach.