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Give reasons: A mixture of dilute NaOH a...

Give reasons: A mixture of dilute NaOH and aluminium pieces is used to open drain.

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Give reasons : (i) Conc. HNO_(3) can be transported in aluminium container. (ii) A mixture of dilute NaOH and aluminium pieces is used to open drain. (iii) Graphite is used as lubricant. (iv) Diamond is used as an abrasive. (v) Aluminium alloys are used to make aircraft body. (vi) Aluminium utensils should not be kept in water overnight. (vii) Aluminium wire is used to make transmission cables.

Give reasons for the following : (a) Aluminium wire is used in transmission cables. (b) Aluminium utensils should not be used to strore drinking water for long time. ( c) A mixture of Al pieces and NaOH is used to open the drain. (d) Aluminium alloys are used to make aircraft bodies.

Assertion (A) : In the synthesis pf Ammonia by Habers process mixture of potassium and aluminium oxides can be used as promotor Reason (R) : Promotor enchances the activity of catalyst

Fluorine with dilute NaOH gives

Fluorine reacts with cold dilute NaOH to give

Butanal with dilute NaOH gives