Answer:
a. Can be present in dust, fumes, liquids, solids, mists, vapors, or gases of products used at a site or released during a construction job
Explanation:
Chemical hazard is a hazard caused by exposition to chemical dangers in the work place, chemicals can cause damage to humans and animals because they can be present in dust, fumes, liquids solids, mists vapors or gases, and they are difficult to detect, that is why they are very dangerous since they are really hard to detect.
