JEE PYQ: P Block Elements Question 43
Question 43 - 2020 (09 Jan Shift 1)
The compound that cannot act both as oxidising and reducing agent is:
(1) $\text{H}_3\text{PO}_4$
(2) $\text{HNO}_2$
(3) $\text{H}_2\text{SO}_3$
(4) $\text{H}_2\text{O}_2$
Show Answer
Answer: (1)
Solution
In $\text{H}_3\text{PO}_4$, oxidation state of P is +5, which cannot be oxidised further to a higher oxidation state. Hence, it cannot act as reducing agent.