Food Safety Cleaning & Sanitizing

Question 1

What is the key difference between cleaning and sanitizing?

Accepted Answer

Cleaning removes dirt and debris; sanitizing reduces pathogens to safe levels

Answer

Cleaning removes visible food residue and dirt, while sanitizing uses heat or chemicals to reduce pathogen levels to safe numbers on surfaces.

Question 2

What is the minimum water temperature for hot-water sanitizing in a three-compartment sink?

Accepted Answer

171°F

Answer

When using hot water as the sanitizer in a three-compartment sink, water must reach a minimum of 171°F to effectively reduce pathogens.

Question 3

What is the correct concentration range for a chlorine (bleach) sanitizing solution?

Accepted Answer

50–100 ppm

Answer

A chlorine sanitizing solution must be maintained at 50–100 ppm to be effective against pathogens without leaving harmful chemical residue.

Question 4

What must be done to a food contact surface between the cleaning and sanitizing steps?

Accepted Answer

Rinse with clean water to remove all soap residue

Answer

Food contact surfaces must be rinsed with clean water after cleaning to remove soap residue, which can neutralize sanitizers and reduce their effectiveness.

Question 5

How long must a food contact surface remain in contact with sanitizing solution to be effective?

Accepted Answer

The contact time specified by the sanitizer manufacturer, typically 7–30 seconds

Answer

Sanitizers require the specific contact time — usually 7 to 30 seconds as listed by the manufacturer — to reduce pathogens to safe levels.

Food Safety Practice Test

Food Safety Practice Test

Food Safety Cleaning & Sanitizing