Aluminium vessels should not be washed with materials containing washing soda because:
A
Washing soda reacts with aluminium because the latter is amphoteric.
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B
Washing soda is expensive
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C
Washing soda is easily decomposed
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D
Washing soda reacts with aluminium to form insoluble aluminium oxide
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Solution
The correct option is A Washing soda reacts with aluminium because the latter is amphoteric. Aluminium metal - just like the oxide and the hydroxide - reacts with both acids and bases.