1.

Which has maximum number of oxo groups ?A. `H_2SO_4`B. `H_2SO_3`C. `H_3PO_3`D. `H_3PO_4`

Answer» Correct Answer - A
Oxo group means M = O group
`HO-undersetundersetunderset((H_2SO_4))(O)(||)oversetoverset(O)(||)S-OH " " HO-underset((H_2SO_3))oversetoverset(O)(||)S-OH`
`HO-undersetundersetunderset((H_3PO_4))(OH)(|)oversetoverset(O)(||)P-OH " " HO-underset((H_2PO_3))undersetunderset(H)(|)oversetoverset(O)(||)P-OH`
`H_2SO_4` has maximum number of oxo groups (two).


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