A) \[A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\]
B) \[A{{l}_{2}}{{O}_{3}}.2{{H}_{2}}O\]
C) \[AlC{{l}_{3}}\]
D) \[\text{SiC}\]
Correct Answer: D
Solution :
We know that carborundum is silicon carbide (SiC). Therefore, it is used as abrassive for polishing metallic surface.
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