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Match List-I with List-II : List-I Name of oxo acid (a) Hypophosphorous acid (b) Orthophosphoric acid (c) Hypophosphoric acid (d) Orthophosphorous acid List-II Oxidation state of 'P' (i) +5 (ii) +4 (iii) +3 (iv) +2 (v) +1 Choose the correct answer from the options given below :

1. (1) (a)-(v), (b)-(i), (c)-(ii), (d)-(iii)
2. (2) (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
3. (3) (a)-(iv), (b)-(v), (c)-(i), (d)-(ii)
4. (4) (a)-(v), (b)-(iv), (c)-(ii), (d)-(iii)

Correct answer: (4) (a)-(v), (b)-(iv), (c)-(ii), (d)-(iii)

Solution

The correct option matches each oxo acid with the appropriate oxidation state of phosphorus based on their chemical structure: Hypophosphorous acid has phosphorus in the +1 state, Orthophosphoric acid has it in the +5 state, Hypophosphoric acid in the +3 state, and Orthophosphorous acid in the +4 state.

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