Question

Column I		Column II
A	Depature from regularity in the arrangement of constitutent particles in a crystal	p	Zinc blende
B	Cubic	q	Defect or imperfection
C	Glass and fused silica	r	$SiO _4$
D	Tetrahedral	s	Amorphous solid

• A. A - (p), B - (r), C - (q), D -(s)
• B. A - (q), B - (p), C - (s), D -(r)
• C. A - (s), B - (q), C - (r), D -(p)
• D. A - (r), B - (s), C - (p), D -(q)

Answer 1

Answer: (B)

$(a \rightarrow q)$ Defect
$(b \rightarrow p ) ZnS$ belongs to cubic system
$( c \rightarrow s )$ Glass and $SiO _2$ are amorphous solid
$( d \rightarrow r ) SiO _4$ have tetrahedron structure