If a few drops of a concentrated acid accidentally spills over the hand of a student, what should be done?
Wash the hand with saline solution
Wash the hand immediately with plenty of water and apply a paste of sodium hydrogencarbonate
After washing with plenty of water apply solution of sodium hydroxide on the hand
Neutralise the acid with a strong alkali
Steps: Immediate first aid: rinse thoroughly with plenty of water, then apply a mild base like NaHCO₃ paste to neutralise. Do NOT use strong alkali (caustic) directly.