Q.1.
Frenkel defect is also known as
Q.2.
Analysis shows that nickel oxide has the formula Ni0.98O1.What fractions of nickel exist as Ni ions?
Q.3.
ZnO turns yellow on heating. Why ?
Q.4.
AB AB … type close packing pattern represents
Q.5.
Density of a crystal is given by the formula
Q.6.
An example for Network solid
Q.7.
A semiconductor material
Q.8.
Defect causing decrease in density
Q.9.
An amorphous solid
Q.10.
P-type semiconductors are formed when Silicon or Germanium is doped with Group
Q.11.
Anionic sites occupied by unpaired electrons are called
Q.12.
Defect shown by ionic crystals with large difference in size
Q.13.
Crystal showing both Schottky & Frenkel defect
Q.14.
Crystalline solids are
Q.15.
The wrong statement about Para magnetism
Q.16.
Number of atoms per unit cell in a Face Centered Cubic lattice
Q.17.
There are ……….. Bravais lattices corresponding to 7 different Crystal Systems
Q.18.
In a primitive unit cell atoms are present at the
Q.19.
Smallest repeating unit of crystal lattice
Q.20.
Crystal system characterized by a ≠ b≠ c and α = β = γ = 90o