MCQ
What is freon-$12$
- APesticide
- ✓Refrigerant
- CSolvent
- DLubricant
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(Given atomic number: $\mathrm{C}: 6, \mathrm{Na}: 11, \mathrm{O}: 8$, $\mathrm{Fe}: 26, \mathrm{Cr}: 24 \mathrm{~J}$