Discussion
Silicon carbide is valued chiefly for its
Answer: D
Correct answer: hardness and high thermal conductivity
Silicon carbide is one of the hardest materials known, close behind diamond and boron carbide, and it conducts heat better than most metals while remaining a ceramic. That pairing explains its uses: abrasives and wear parts from the hardness, and kiln furniture, heat exchangers and heating elements from the conductivity. It is also chemically inert, which is why the acid solubility option is the opposite of the truth.
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