Question

Which of the following analogies is correct?
$\text{Graphite}:\text{Hexagonal}::\text{Titanium dioxide}:$

• A. Triclinic
• B. Tetragonal
• C. Hexagonal
• D. Cubic

Answer 1

The correct option is B Tetragonal

Graphite belongs to hexagonal system where $a=b\ne c$ and $\alpha =\beta ={90}^o,\gamma ={120}^o$.
Titanium dioxide $\left(Ti{O}_2\right)$ is an example of tetragonal crystal system having $\alpha =\beta =\gamma ={90}^o$ and $a=b\ne c$