TFHC Cross-Contamination Prevention 3

Question 1

What is the best way to prevent cross-contamination when thawing raw meat in a refrigerator?

Accepted Answer

Place raw meat in a sealed container or on a tray on the lowest shelf

Answer

Sealed containers or trays on the lowest shelf catch drips and prevent raw meat juices from contaminating other foods.

Question 2

A cook uses their bare hands to form raw hamburger patties and then immediately slices tomatoes. What is the primary risk?

Accepted Answer

Transferring E. coli from the raw beef to the ready-to-eat tomatoes

Answer

Raw ground beef commonly contains E. coli O157:H7 — touching ready-to-eat foods with unwashed hands after handling raw beef is a serious contamination risk.

Question 3

What does 'sanitize' mean in the context of preventing cross-contamination?

Accepted Answer

Reducing pathogens on a surface to safe levels using chemicals or heat after cleaning

Answer

Sanitizing uses approved chemicals or heat to reduce microbial levels on a surface — it must happen after cleaning to be effective.

Question 4

Why is it dangerous to store cleaning chemicals above or near food storage areas?

Accepted Answer

Chemicals can spill or leak onto food, causing chemical contamination and potentially serious illness

Answer

Storing chemicals above food creates a risk of chemical spills dripping onto food, which can cause chemical poisoning or death.

Question 5

Which scenario represents indirect cross-contamination?

Accepted Answer

A worker touches raw chicken, wipes their hands on an apron, then handles a bread roll

Answer

Indirect contamination passes through an intermediate carrier (the apron) rather than direct contact between the contaminated and clean food.

TFHC - Texas Food Handlers Certification Practice Test

TFHC - Texas Food Handlers Certification Practice Test

TFHC Cross-Contamination Prevention 3