AP EAMCET202124 Aug 2021Morning ShiftChemistryp Block Elements (Group 13 & 14)Actual
Identify the incorrect statement about SiO ₂ (silica) from the following.
Options
- AIt is highly reactive due to low Si - O bond enthalpy.
- BIt is a covalent three-dimensional network solid.
- CQuartz, the crystalline form of silica, is used as a piezoelectric material.
- DAn amorphous form of silica is used in filtration plants.
Correct answer
A. It is highly reactive due to low Si - O bond enthalpy.
Step-by-step solution
SiO ₂ is a covalent three dimensional network solid. Silica (commonly known as quartz) is SiO ₂ which is usually used to manufacture glass, ceramics, piezoelectric materials. Most common use of silica is in water filtration, because of its uniform shape and size, it is an effective filtration bed that removes contaminants from water. SiO ₂ is less reactive due to high Si - O bond enthalpy.