Throwing water in hot oil is a very bad idea. When the water is poured into hot oil, a violent physical reaction is performed, in which water is immediately converted to steam due to high oil temperature. Steam has a much larger volume than water, As a result the oil is fired quickly and violently. This process may be dangerous, As the burning oil can be sprayed in this way at a long distance. This is not a chemical reaction, but for violent thermal transition of water to steam.