CCO CCO Cremation Chemistry & Biology 2

Question 1

Which gas is the primary byproduct of complete combustion of organic tissue during cremation?

Accepted Answer

Carbon dioxide (CO₂)

Answer

Complete combustion of organic carbon compounds produces carbon dioxide (CO₂) and water vapor as the primary byproducts.

Question 2

Carbon monoxide (CO) emissions indicate which condition in the cremation chamber?

Accepted Answer

Incomplete combustion due to insufficient oxygen or temperature

Answer

Carbon monoxide is produced during incomplete combustion when there is insufficient oxygen or temperature to fully oxidize carbon to CO₂.

Question 3

What biological hazard concern is primarily associated with handling human remains before cremation?

Accepted Answer

Bloodborne pathogen exposure (e.g., HIV, hepatitis B/C)

Answer

Bloodborne pathogens such as HIV, hepatitis B, and hepatitis C present the primary biological hazard when handling unembalmed human remains.

Question 4

At what temperature are most pathogens, including prions, destroyed during cremation?

Accepted Answer

All pathogens including most prions are inactivated at cremation temperatures above 1400°F (760°C)

Answer

Cremation temperatures above 1400°F (760°C) inactivate virtually all pathogens, including most prions, through thermal denaturation of proteins.

Question 5

Why are silicone implants (e.g., breast implants) a consideration during cremation?

Accepted Answer

They can release toxic fumes and leave residue that must be managed

Answer

Silicone implants can release toxic fumes during combustion and leave residue in the retort that must be documented and properly managed.

(CCO) Certified Crematory Operator Practice Test