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Hardest compound of boron is

(a) magnesium boride

(b) aluminium boride

(c) boron nitride

(d) boron carbide

1 Answer

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Correct option (d) boron carbide

Explanation:

Boron carbide is written as B4C. It is produced by reducing B2O3 with C at 1600°C. Fibres of B4C have an enormous tensile strength and are used to make bullet-proof clothing.

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