Sodium oxide dissolves in water to give sodium hydroxide,which indicates its:

Metals dissolve in liquid ammonia giving coloured solutions which are conducting in nature. The colour of the solution and reason of its conductance is

In $LiAlH_4$,metal $Al$ is present in

$NH_3 + CO_2 + H_2O \to A$
$A + H_2O + CO_2 \to B$
$B + NaCl \to C + NH_4Cl$
$C \xrightarrow{\Delta} D + H_2O + CO_2$
Identify the incorrect statement.

Which of the following is not hygroscopic?

Which of the following is not an ore of magnesium?