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    				| 1. | Which of the following statements is most applicable to hydrogen ?A. It can act as a reducing agent onlyB. It can act as an oxidising agent onlyC. It can act as both as oxidising and reducing agentsD. It can act neither as an oxidising nor as a reducing agent. | 
| Answer» Correct Answer - 3 Hydrogen can act both as oxidising and reducing agent. It acts as oxidising agnet when reacts with metal and form emtal hydrides which are elctrovalent compounds. `2Na+H_(2)rarr2Na^(+)H^(c-)` `Ca+H_(2)rarrCaH_(2)` Hydrogen also acts as reducing agent when its reacts with oxides `PbO+H_(2)rarrPb+H_(2)O` `CuO+H_(2)rarrCu+H_(2)O` `Fe_(3)O_(4)+H_(2)rarr3Fe+4H_(2)O` | |