JEE Main · 2023 · 11 Apr 2023 · Shift 2 · Haloalkanes and Haloarenes

Which of the following compounds is an example of Freon?

(A) $C_{2} C l_{2} F_{2}$ ✓ Correct
(B) $C_{2} H F_{3}$
(C) $C_{2} H_{2} F_{2}$
(D) $C_{2} F_{4}$

Answer: (A)

Solution

Freons are the chlorofluorocarbons, compounds that contain carbon together with both chlorine and fluorine. Of the four choices only

C_{2} C l_{2} F_{2}

carries chlorine and fluorine on the carbon skeleton; the remaining three are a hydrofluorocarbon and perfluorocarbons that lack chlorine altogether and so fall outside the Freon family. Hence the compound that qualifies as a Freon is

C_{2} C l_{2} F_{2}

JEE Main · 2023 · 11 Apr 2023 · Shift 2 · Single correct option

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