Question:
Which method of purification is represented by the following equation :
$$
\mathrm{Ti}(\mathrm{s})+2 \mathrm{I}_{2}(\mathrm{~g}) \stackrel{\mathrm{s} 23 \mathrm{~K}}{\longrightarrow} \mathrm{TiI}_{4}(\mathrm{~g}) \stackrel{1700 \mathrm{~K}}{\longrightarrow} \mathrm{Ti}(\mathrm{s})+2 \mathrm{I}_{2}(\mathrm{~g})
$$
Correct Option: 1
Solution:
Ti,Zr,Hg etc can be purified by Van Arkel's process.