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Question

Which one of the following substance will be most suitable for cutting a very hard material?

A
Silicon carbide
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B
Lead
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C
Zinc metal
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D
Sodium chloride crystal
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Solution

The correct option is D Silicon carbide
Silicon carbide is most suitable for cutting a very hard material.
In manufacturing processes it is used for its hardness in abrasive machining processes such as grinding, honing, water-jet cutting and sandblasting.

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