EXERCISE-2

$\mathrm{X}\underset{{\mathrm{N}}_2}{\overset{∆}{\to }}\mathrm{Y}\stackrel{{\mathrm{H}}_2\mathrm{O}}{⟶}\mathrm{Z}$ (a colourless gas) $\stackrel{{\mathrm{CuSO}}_4}{\to }\mathrm{T}$ (blue colour) :

Then, substances$\mathrm{Y}$ and $\mathrm{T}$ are -

When ${\mathrm{K}}_2\mathrm{O}$ is added to water, the solution becomes basic in nature because it contains a significant concentration of :

If $\mathrm{A}$ is the metalic salt, then the white $\mathrm{ppt}.$ of $\mathrm{D}$ must be of

$\mathrm{Na}+{\mathrm{Al}}_2{\mathrm{O}}_3\stackrel{\text{ high temperature }}{⟶}\mathrm{X}\stackrel{{\mathrm{CO}}_2 \mathrm{in} \mathrm{water}}{\to }\mathrm{Y} ;$ compound $\mathrm{Y}$ is :

Among $\mathrm{LiCl}, \mathrm{RbCl}, {\mathrm{BeCl}}_2$ and ${\mathrm{MgCl}}_2$ the compound with greatest and least ionic character respectively are _______.

Which of the following statements are false?

${\mathrm{KO}}_2$ finds use in oxygen cylinders used for space and submarines. The fact(s) related to such use of ${\mathrm{KO}}_2$ is/are:

${\mathrm{Ca}}_3{\left({\mathrm{PO}}_4\right)}_2$ is: