Q.

Which of the following statement about boron carbide is wrong?

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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

answer is C.

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Detailed Solution

Boron carbide B4​C 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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