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प्रश्न
Aluminium is extracted from its chief ore bauxite. The ore is first purified and then the metal is extracted from it by electrolytic reduction.
Mention one reason for the use of aluminium in thermite welding. Which particular property of cast iron makes it unsuitable for the construction of bridges?
एक पंक्ति में उत्तर
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उत्तर
As a reducing agent: Aluminium has a high affinity for oxygen. It readily removes oxygen from oxides of less reactive metals.
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