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Question
If a few drops of a concentrated acid accidentally spills over the hand of a student, what should be done?
Options
Wash the hand with saline solution
Wash the hand immediately with plenty of water and apply a paste of sodium hydrogen carbonate
After washing hand with plenty of water, apply solution of sodium hydroxide on the hand
Neutralise the acid with a strong alkali
Solution
Wash the hand immediately with plenty of water and apply a paste of sodium hydrogen carbonate
Explanation -
Washing the hand initially with plenty of water gives partial relief from burning sensation. The paste of sodium hydrogen carbonate completely neutralises the effect of the acid.
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