First slide

13th group or boron group

Question

Boron Carbide $(B_{4} C)$ is widely used for ____?

Moderate

A

Making of plaster of Paris
B

Making acetylene
C

Making hardest substance
D

Making Boric acid

Solution

Boron carbide is an interstitial carbide and a very hard substance. It is used as an abrasive.

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