Question

q1 when rubbed against each other which one of quartz and silica will abrade faster and why

q2 which one of these two solids is most likely to conduct electricity and why ?
q3 mention the value which ravi and and his brother possess

Answer 1

In Silica, the sulfur and oxygen atoms joined by covalent bonds to form a huge crystal structure. Each sulfur atom is surrounded by four oxygen atoms (tetrahedrally).