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Which of the following is a covalent crystal?A. BenzeneB. UreaC. Zinc sulphideD. Silicon carbide |
Answer» Correct Answer - 4 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. |
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