JEE Main 2020ChemistryChemistry in Everyday LifeEasyMCQ

JEE Main 2020 — Chemistry in Everyday Life Question with Solution

JEE Main 2020 (02 Sep Shift 2)

Question

If you spill a chemical toilet cleaning liquid on your hand, your first aid would be:

Choose an option

Show full solutionCorrect option: C
Correct answer
Caqueous NaHCO3

Step-by-step explanation

In toilet cleaning liquid the main constituent isHCl, which can cause skin burn so it should be treated with NaHCO3 which can easily consume the acid.

If a few drops of a concentrated acid accidentally spill over the hand of a student, wash the hand immediately with plenty of water and apply a paste of sodium hydrogen carbonate.
Water will dilute the acid and wash it out. Any remaining acid will be neutralized with sodium hydrogen carbonate. This will minimize the effect of acid and damage to the skin.

Other given substances are not good for skin.

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About this question

This is a previous-year question from JEE Main 2020, covering the Chemistry in Everyday Life chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.