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Question

The cementite is :

A
interstitial compound of iron and carbon
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B
an alloy of Fe and Cr
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C
a compound resembling cement
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D
an ore of Iron
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Solution

The correct option is A interstitial compound of iron and carbon
Cementite is iron carbide Fe3C, and an orthorhombic crystal structure. It is a hard, brittle material, essentially a ceramic in its pure form.
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