Which of the following is a covalent crystal?

Options

A. Benzene
B. Urea
C. Zinc sulphide
D. Silicon carbide

Answer

4

Explanation

Sillion carbide `(SiC)`,also known as carborundum is a dark crystalline solid in which lattice points are occupied by `Si` and `C` atoms held together by strong covalent bonds.It is nearly as hard as diamond used as an abrasivw and as a refractory material .Made by heating silica (`SiO_(2))` witgh `C` in an electric furnace.
Benzene is a nonpolar molecules solid, urea is a polar molecules solid and zinc sulphide is an ionic solid.