Catalysts are used up during chemical reaction is the one statement among the following statements that is true about catalysts. The correct option among all the options that are given in the question is the third option or option "c". I hope the answer comes to your help.
Fire Burning is the correct answer
In chemistry and physics, a valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.
metal because it a alkaline eart medal