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    				| 1. | stinQuestions: Page6xideQ. Why should a magnesium ribbon be cleaned before[SAI-2010]burning in air? | 
| Answer» Magnesium ribbon mustbecleaned before burningin air so that the layer ofmagnesiumoxide (which is formed due to reaction ofmagnesiumwith air) can be removed in order to get the desired chemical reaction. | |