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Diamond

The hardest s...

Question

The hardest substance amongst the following is?

A

B e_{2} C

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B

Titanium

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C

B_{4} C

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D

Graphite

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Solution

The correct option is A $B_{4} C$
Boron Carbide ( $B_{4} C$ ) is one of the hardest materials known, ranking third behind diamond and cubic boron nitride.

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