Question

Match List - I with List -II

$\begin{array}{cc}List-I& List-II\\ \text{Name of oxo acid}& \text{Oxidation state of 'P'}\\ \text{(a) Hypophosphorous acid}& \left(i\right)+5\\ \text{(b) Orthophosphoric acid}& \left(ii\right)+4\\ \text{(c) Hypophosphoric acid}& \left(iii\right)+3\\ \text{(d) Orthophosphorous acid}& \left(iv\right)+2\\ & \left(v\right)+1\end{array}$

Choose the correct answer from the options given below :

• A. $\text{(a) -(v), (b)-(iv), (c)-(ii), (d)-(iii)}$
• B. $\text{(a) -(iv), (b)-(v), (c)-(ii), (d)-(iii)}$
• C. $\text{(a) -(v), (b)-(i), (c)-(ii), (d)-(iii)}$
• D. $\text{(a) -(iv), (b)-(v), (c)-(ii), (d)-(iii)}$

Answer 1

The correct option is C $\text{(a) -(v), (b)-(i), (c)-(ii), (d)-(iii)}$

$\begin{array}{cc}\text{Hypophosphorous acid}\left(H_{3}P{O}_2\right)& +1\\ \text{Orthophosphorous acid}\left(H_{3}P{O}_3\right)& +3\\ \text{Hypophosphoric acid}\left(H_4{P}_2{O}_6\right)& +4\\ \text{Orthophosphoric acid}\left(H_{3}P{O}_4\right)& +5\end{array}$

Hence the correct option is (c).