MCQOPTIONS
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MCQOPTIONS
| 1. |
The basic structural unit of feldspar, zeolites, mica and asbestos is: |
| A. | (SiO3)2- |
| B. | SiO2 |
| C. | (SiO4)4- |
| D. | \({\left( { - \begin{array}{*{20}{c}}{\begin{array}{*{20}{c}}{\rm{R}}\\|\end{array}}\\{{\rm{Si}}}\\{\begin{array}{*{20}{c}}|\\{\rm{R}}\end{array}}\end{array} - {\rm{O}} - } \right)_{\rm{n}}}\left( {{\rm{R}} = {\rm{Me}}} \right){\rm{\;}}\) |
| Answer» D. \({\left( { - \begin{array}{*{20}{c}}{\begin{array}{*{20}{c}}{\rm{R}}\\|\end{array}}\\{{\rm{Si}}}\\{\begin{array}{*{20}{c}}|\\{\rm{R}}\end{array}}\end{array} - {\rm{O}} - } \right)_{\rm{n}}}\left( {{\rm{R}} = {\rm{Me}}} \right){\rm{\;}}\) | |