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Questions and Answers
Which of the following is the basic unit of silicates?
Which of the following is the basic unit of silicates?
- Silica
- Quartz
- Cristobalite
- SiO44- tetrahedron (correct)
Which of the following is NOT a primary polymorphic crystalline form of silica?
Which of the following is NOT a primary polymorphic crystalline form of silica?
- Silica (correct)
- Cristobalite
- Quartz
- Tridymite
Which of the following is true about silica glasses?
Which of the following is true about silica glasses?
- They have a low density
- They have a high melting point
- They are formed by adding CaO and Na2O to silica
- They are noncrystalline (correct)
What is the chemical formula for silica?
What is the chemical formula for silica?
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What type of bonds are present in silica ceramics?
What type of bonds are present in silica ceramics?
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Which of the following is NOT a characteristic of silicate ceramics?
Which of the following is NOT a characteristic of silicate ceramics?
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Which of the following is NOT a primary polymorphic crystalline form of silica?
Which of the following is NOT a primary polymorphic crystalline form of silica?
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Which of the following is NOT a network former in silica glasses?
Which of the following is NOT a network former in silica glasses?
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Which of the following is true about the crystal structure of silicates?
Which of the following is true about the crystal structure of silicates?
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Which of the following is true about fused silica?
Which of the following is true about fused silica?
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