【題目】下列物質(zhì)的主要成分不屬于硅酸鹽的是（ ）

A．陶瓷 B．玻璃 C．水泥 D．瑪瑙

【答案】D

【解析】A．陶瓷是硅酸鹽的混合物，屬于硅酸鹽材料錯(cuò)誤；B．玻璃是硅酸鹽的混合物，屬于硅酸鹽材料，錯(cuò)誤；C．水泥含有硅酸鹽，屬于硅酸鹽材料，錯(cuò)誤；D．瑪瑙主要成分是SiO2，屬于氧化物，不是硅酸鹽，正確。

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