Question

Which from following is the most commonly used refrigerant Freon-12?

• A. Chlorofluoromethane
• B. Dichlorodifluoromethane
• C. Chlorodifluoromethane
• D. Dichlorofluoromethane

Hint:

Freon-12 = $CCl_{2}F_{2}$, Freon-11 = $CCl_{3}F$.

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
The question asks for the chemical identity of Freon-12.

Step 3: Detailed Explanation:
Freon-12 is a chlorofluorocarbon (CFC) with the formula \( \text{CCl}_2\text{F}_2 \).
Its IUPAC name is Dichlorodifluoromethane.
It was used extensively as a refrigerant before being phased out due to ozone depletion.

Step 4: Final Answer:
Freon-12 is Dichlorodifluoromethane.