Answer:
You didn't give any options, but here is a definition:
Chemical hazards are chemical contaminants, their residues, or degradation products to unacceptable levels in food.
Chemical hazards include natural toxins (ciguatoxins, paralyzing, neurotoxic, amnesic and diarrheal toxins, among others), microbial toxins (mycotoxins), toxic metabolites of microbial origin (histamines), pesticides, herbicides, toxic inorganic contaminants, antibiotics, anabolic, additives. and toxic food aids, lubricants, paints and disinfectants, pesticides, cleaning products (detergents and sanitizers, for example), heavy metals and a large amount of products that may come into contact with food.