Give examples of the following: 

Deliquescent substances.

The higher the temperature of the air _____ the efflorescence. (Higher / Lower)

Which of the following substances is green in colour?

A fixed number of water molecules loosely bound to the salts is called

Complete the following equation:
 $\mathrm{Mg}\left(\mathrm{s}\right)$ $+$ _____$\left(\mathrm{l}\right)$ $\to \mathrm{MgO}\left(\mathrm{s}\right) +{\mathrm{H}}_2\left(\mathrm{g}\right)$

$\mathrm{A}$: ${\mathrm{O}}_2$

$\mathrm{B}$: ${\mathrm{H}}_2{\mathrm{O}}_2$

$\mathrm{C}$: ${\mathrm{H}}_2\mathrm{O}$

$\mathrm{D}$: $\mathrm{NaCl}$

Enter your correct answer as $\mathrm{A}, \mathrm{B}, \mathrm{C}$ or $\mathrm{D}$.

The condition of efflorescence is