can I use dc 12v motor in kerosene?
There are many 12v fuel pumps that are designed to run submerged in gasoline, like this one for example https://www.amazon.com/WALBRO-255LPH-PRESSURE-GSS342-Authentic/dp/B0098MC3GU

You should look into pumps specifically designed to be used with fuels; there may be ones specifically rated for kerosene.