First slide

13th group or boron group

Question

Which of the following statement about boron carbide is wrong?

Moderate

A

Its molecular formula is B₄C
B

It is also called Norbia.
C

It is the hardest substance
D

It is used for cutting glasses

Solution

Boron carbide B₄C is an extremely hard boron carbon ceramic material used in tank armor, bullet proof vests, engine sabotage powders and is called Norbia.

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