1.

Which of the following compounds/alloys of silicon in used in grinding wheel and which property of that substance is exploited ?A. Silicon carbide because it is the hardest substance.B. Ferrosilicon because it is resistant to friction.C. Sodium silicate because it becomes impervious when heated strongly.D. Silicon dioxide because it is resistant to chemicals.

Answer» Correct Answer - A
Silicon carbide is used in grinding wheels because it is the hardest substance.


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