Match List-I with List-II and select the correct answer:

List-I	List-II
a. Ferro-magnetism	1. d.c. electrical resistivity vanishes at the critical temperature TC
b. Semiconductor	2. Doping with impurity increases the electrical conductivity
c. Optical property of solid	3. An internal molecular field BM which is proportional to magnetization M exists at each dipole and aligns it parallel to other dipoles
d. Superconductivity	4. Above the Neel temperature the dipoles become randomly oriented
	5. The conductivity of crystalline semiconductors and dielectrics increases by radiation incident