Below you can find the Its chemical symbol is co; it's used in paints & varnishes & is essential for a good diet Jeopardy Words Answer. The answer to Its chemical symbol is co; it's used in paints & varnishes & is essential for a good diet has 6 letters. This clue belongs to the Chemistry category and is part of Jeopardy Word Level 940. If you scroll near the bottom you will find other clues and answers part of level 940