Which of the Following Can Be Disposed of in the Sink

Question

Which of the following can be disposed of in the sink?
A) saliva
B) blood
C) salt solution
D) preservative

Accepted Answer

Salt solution (assuming it is not a hazardous chemical) can typically be safely disposed of down the sink as it is a dilute solution that will not harm plumbing or the environment. Saliva should be disposed of in a biohazard container, blood should be disposed of in a regulated medical waste container, and preservatives may contain hazardous chemicals that should not be dumped down the sink.