Question

4 multiple choice 1 point
a piece of broken glass in a bin of ice is an example of which type of contaminant?

• biological contaminant
• physical contaminant
• chemical contaminant

5 multiple choice 1 point
using the same spoon multiple times to taste cooking food, is an example of which type of contaminant?

• chemical contaminant
• physical contaminant
• biological contaminant

6 multiple choice 1 point
sneezing without covering your mouth and nose or washing your hands is an example of which type of contaminant?

• chemical contaminant
• biological contaminant
• physical contaminant

7 multiple choice 1 point
chemicals stored above dry, packaged pasta is an example of which type of contaminant?

• biological contaminant
• chemical contaminant
• physical contaminant

Explanation:

Question 4

Physical contaminants are foreign objects like glass, metal, etc. Broken glass in ice is a physical object, so it's a physical contaminant. Biological contaminants are living organisms (like bacteria), chemical are substances (like toxins).

Using the same spoon to taste food repeatedly can introduce bacteria (from mouth) into the food, which are biological (living) contaminants. Chemical contaminants are substances, physical are foreign objects.

Sneezing without covering can spread germs (bacteria, viruses) which are biological contaminants. Chemical are substances, physical are objects.

Answer:

B. Physical contaminant

Question 5