Q.

Boron carbide B4C, is widely used for:

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a

Making plaster of Paris

b

Making acetylene

c

As hardest substance after diamond

d

Making boric acid

answer is C.

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Detailed Solution

Due to its high hardness, boron carbide powder is used as an abrasive in polishing and lapping applications ,and also as a loose abrasive in cutting applications such as water jet cutting .It can also be used for dressing diamond tools
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Boron carbide B4C, is widely used for: