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    				| 1. | 
                                    Identify the substance which acts as an oxidising agent and reducing agent in the following reaction : (i) H_(2)(g) +Cl_(2)(g) to 2HCl(g) (ii) 2Al(s) + Cr_(2)O_(3)(s) to Al_(2)O_(3)(s) +2Cr(s) | 
                            
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Answer» Solution :`Cl_(2)` in reaction (i) and `Cr_(2)O_(3)` in reaction (ii), ACTS as an OXIDISING AGENT. While, `H_(2)` in reaction (i) and Al, in reaction (ii) acts as a reducing agent.  | 
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