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Which silicate structure does the following figure represent?

(a) Chain

(b) Sheet

(c) Vitreous

(d) Tetrahedron

The question was asked in an interview for job.

My question is from Abrasives, Silicate Structures and Polymorphism topic in chapter Composite & Ceramic Materials of Engineering Material & Metallurgy

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Correct option is (b) Sheet

For explanation I would say: A silicate sheet structure is found when a double chained structure extends into a two-dimensional plane. Clay and mica are examples of ceramics having a sheet structure.

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