Which of the following compound belong to the class of freons? (a) \( \mathrm{CCl}_{4} \) (b) \(...

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Which of the following compound belong to the class of freons?
(a) \( \mathrm{CCl}_{4} \)
(b) \( \mathrm{COCl}_{2} \)
(c) \( \mathrm{C}_{3} \mathrm{O}_{2} \)
(d) \( \mathrm{CF}_{2} \mathrm{Cl}_{2} \)
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