MCQ
Statement “Ozone in atmosphere is decreased by chloro-fluoro-carbon $(C{l_2}{F_2}C)$”
- ✓Is true
- BIs false
- COnly in presence of $C{O_2}$
- DOnly in absence of $C{O_2}$
✓
Answer
Correct option: A.
Is true
a
It’s obvious.
It’s obvious.
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