Give reason
Conc `HNO_3` can be transported in aluminium container

Given reasons: concentrated nitric acid renders aluminium passive.

Give reasons why carbon is tetravalent.

Give reason Diamond is used as an abrasive.

Give reasons :- A gas exerts pressure on the walls of the container.

Explain the following giving reason why HNO_3 can act as oxidising agent only while HNO_2 can act as both oxidising and reducing agent .

Give reasons: Rusting of iron pipe can be prevented by joining it with a piece of magnesium.

Give reason - Why : School bells are made of metals.

Give reasons (i) AICl_3 has lower melting point than MgCl_2

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

Give reasons: [COF_6]^(3-) is a high spin complex ion.