Which of the following ceramics has a two-layer silicate sheet structure?
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A.
Silica glass
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B.
Kaolinite clay
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C.
Silica
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D.
Fullerene
Correct Answer:
B. Kaolinite clay
Explanation:
Kaolinite clay is a type of phyllosilicate characterized by a 1:1 layer structure, consisting of one tetrahedral silica sheet and one octahedral alumina sheet linked together. These layers are held in place by hydrogen bonding, which prevents water from entering the structure and results in a non-swelling material. This specific two-layer arrangement makes kaolinite a primary component in the production of traditional ceramics like porcelain and china clay. In contrast, materials like silica glass and silica have three-dimensional network structures, while fullerenes are carbon-based molecules rather than silicates.
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