MCQ
Acid rain is the downpour of :
- ACarbon dioxide in rain.
- BDust in rain.
- ✓Sulphur dioxide in rain.
- DOxygen in rain.
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(Given : $h =6.63 \times 10^{-34} \,Js , N _{ A }=6.02 \times 10^{23} \,mol ^{-1}$, $c =3 \times 10^{8}\, ms ^{-1}$ )