Which of the following statements about chemical hazards is TRUE? Most effects of chemical hazards on humans who come into contact with
them become apparent within a half an hour.
Chemical contaminants can be contained by observing safe cooking
temperatures.
In many cases, the impact of chemical contaminants on people's health is
not immediately apparent.
Antimony is an illness caused by consuming a beverage dispensed by
copper tubing

Chemical contaminants can be contained by observing safe cooking  temperatures.

Explanation:

It is true that this statement is bad for people. They can observe safe cooking temperatures where there are chemical hazards and it can harm them because these chemical hazards can absorb through the skin, or it can get into our mouth so it can be dangerous for people to observe something where there are temperatures.

People can inhale some of the chemical hazards and t can be very bad for them.