Of the following acids, the one which has the capability to form complex compound and also possesses oxidising and reducing properties is

Of the following acids, the one which has the capability to form compl

1.	Of the following acids, the one which has the capability to form complex compound and also possesses oxidising and reducing properties is
Answer» `HNO_(3)` `HNO_(2)` HCOOH HCN Solution :`HNO_(2)` acts as reducing oxidising and COMPLEXING AGENT.