Potassium is kept in
Alkali metals are highly reactive metals. They react with
Alcohol - 2C2H5OH + 2K → 2C2H5OK + H2
Water - 2K + 2H2O → 2KOH + H2
Ammonia - K + (x + y)NH3 → [K(NH3)x]+ + [e(NH3)y]−
Ammoniated cation Ammoniated electron
But they do not react with kerosene.