Technician A Says Chlorine in CFC-12 (R-12)refrigerant May Destroy Ozone

question 1

Multiple Choice

Technician A says chlorine in CFC-12 (R-12) refrigerant may destroy ozone molecules for over a century.Technician B says O₃ is destroyed and created by UV radiation.Who is correct?

• A) Technician A only
• B) Technician B only
• C) Both A and B
• D) Neither A nor B

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Definitions:

Urea

A waste product formed in the liver, broken down from proteins, and excreted in urine.

ADH

Antidiuretic hormone, involved in regulating water balance in the body by increasing the concentration of water in the blood.

Collecting Duct

A tube-like structure in the kidney nephrons responsible for the final modification of urine and its concentration by reabsorbing water.

Permeability

The capacity of a material or membrane to allow fluids or gases to pass through it.