Why sodium is kept under oil? Guest 08-12-2017 4 Answers 1 0 TAGS Whysodiumkeptunderoil Dictionary Comment: Submit See all questions in Others it is very reactive element when it is left in the air it molecules reacts with oxygen and exothermic reaction takes place which very dangerous for us Mukesh yadav 08/12/2017 4 0 Report Answer a good answer by yadav shailendra junior 08/12/2017 1 0 Report Answer It is a very reactive element so it is kept in kerosene Sunam Mishra 10/12/2017 0 0 Report Answer Sodium metal is highly reactive with air and moisture. We know that kerosene cannot dissolve oxygen and moisture. So sodium is protective in kerosene . Guest 11/12/2017 0 0 Report Answer