. If a few drops of a concentrated acid accidentally spills over the hand of a student, what should be done


(a) Wash the hand with saline solution
 
(b) Wash the hand immediately with plenty of water and apply a paste of sodium hydrogen carbonate 
 
(c) After washing with plenty of water apply a solution of sodium hydroxide on the hand
 
(d) Neutralise the acid with a strong alkali

Best Answer

Answer: The answer is (b) Wash the hand immediately with plenty of water and apply a paste of sodium hydrogen carbonate

Explanation:
 
Washing affected hand with plenty of water will reduce the concentration of the acid. Remaining traces of the acid can be neutralized by applying a paste of Hydrogen carbonate which is basic in nature. Though NaOH is also a base but it is corrosive in nature hence it is not used to neutralize the acid.

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