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    				| 1. | 
                                    In which of the following pair of compounds, oxidation number of chromium is same(a) K2CrO4 and KCrO2(b) KCrO2 and Cr(CO)6(c) K2Cr2O7 and Cr(CO)4(d) K2Cr2O7 and K2CrO4 | 
                            
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Answer»  (b) KCrO2 and Cr(CO)6  | 
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