Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Engineering Materials Science Structure and Properties of Engineering Materials Defects
Frenkel defect is due to the existence of
1
extra electrons in the crystal
2
extra holes in valence bond
3
lattice distortions in crystal
4
More than one of the above
5
None of the above