Answers

2015-09-05T11:13:34+05:30
When the aluminium vesssel is exposed to air it react with oxgen present in atmosphere an form aluminium oxide . this aluminium oxide reduces the shine of aluminium.
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2015-09-05T11:28:04+05:30
The oxygen reacts with aluminium and forms alluminium oxide which reduces the luster or shinny appearence of the vessel.
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