Give reasons
Aluminium utensils should not be kept in water overnight.

Give reasons Aluminium alloys are used to make aircraft body.

Give reasons : Aluminium is more abundant than gold in the Earth's crust, yet it is the gold and not aluminium that has been known to man since ancient times.

Give reasons for the following (a) No visible reaction occurs when aluminium is left in contact with conc HNO_(3) . (b) The hydroxides of Al and Fe are insoluble in water. However, NaOH is used to distinguish one from another. ( c) Anhydrous AlCl_(3) cannot prepared by heating hydrated aluminium chloride. (d) Aluminium vessels should not be cleaned with cleansing agent containing washing soda. ( e) Duralumin is used in aircraft industry.

Aluminium utensils are .... by food acids.

Give reasons why? Aluminium cannot be obtained by the reduction of its oxide with carbon.

Aluminium vessels should not be washed with materials containing washing soda because:

Aluminium vessels should not be washed with materials containing washing soda because :

Give reason A bench made of aluminium feels colder than a wooden one.

Give reasons : Aquatic animals and plants are able to survive in water.

Give reasons for the following: Aluminium is used in transmission wires.