Give reasons for the following  (a) No visible reaction occurs when aluminium is left in contact
Channel: Doubtnut
Date: 2020-07-26

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.