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【題目】普通玻璃的主要成分是:Na2SiO3;CaCO3;CaSiO3;SiO2;Na2CO3;CaO(

A.①③⑥ B.②③④ C.①③④ D.③④⑤

【答案】C

【解析】制玻璃的原料是純堿、石灰石和石英,在高溫下反應獲得玻璃,玻璃的主要成分是硅酸鈣、硅酸鈉和二氧化硅的混合物,答案選C。

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