Question

Which of the following is Not a Freon?

• A. \(\text{CCl}_{3}\text{F}\)
• B. \(\text{CCl}_{2}\text{F}_{2}\)
• C. \(\text{CBr}_{2}\text{F}_{2}\)
• D. \(\text{CClF}_{3}\)

Hint:

Freons are chlorofluorocarbons, so a compound without chlorine is not a Freon.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept
Freons are chlorofluorocarbons (CFCs), derivatives of methane or ethane in which hydrogens are replaced by chlorine and fluorine.

Step 2: Check the options
\(\text{CCl}_3\text{F}\) (Freon-11), \(\text{CCl}_2\text{F}_2\) (Freon-12) and \(\text{CClF}_3\) (Freon-13) all contain Cl and F.

Step 3: Result
\(\text{CBr}_2\text{F}_2\) has bromine and no chlorine. It is a bromofluorocarbon (a halon, used in fire extinguishers), so it is not a Freon.

Final Answer:
CBr2F2 is not a Freon, which is option (C). \[ \boxed{\text{(C) }\text{CBr}_{2}\text{F}_{2}} \]