MCQ
In which layer, most of the atmospheric air is present?
- ✓Troposphere.
- BStratosphere.
- CMesosphere.
- DThermosphere.
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$S_8,\,S_2O_3^{2-},\, S_2O_7^{-2},\, S_4O_6^{-2},\, SO_3^{-2}$