Question

Match the items given in Column I with the items given in Column II.

Column I	Column II
(i) Mg in solid state	(a) p-Type semiconductor
(ii) MgCl2 in molten state	(b) n-Type semiconductor
(iii) Silicon with phosphorus	(c) Electrolytic conductors
(iv) Germanium with boron	(d) Electronic conductors

Answer 1

Column I	Column II
(i) Mg in solid state	(d) Electronic conductors
(ii) MgCl2 in molten state	(c) Electrolytic conductors
(iii) Silicon with phosphorus	(b) n-Type semiconductor
(iv) Germanium with boron	(a) p-Type semiconductor

Explanation:

(i) Mg in solid state show electronic conductivity due to presence of free electrons hence, they are known as electronic conductors.

(ii) MgCl₂ in molten state show electrolytic conductivity due to presence of electrolytes in molten state.

(iii) Silicon doped with phosphorus contain one extra electron due to which it shows conductivity under the influence of electric field and known as p-type semiconductor.

(iv) Germanium doped with boron contains one hole due to which it shows conductivity under the influence of electric field and known as n-type semiconductor.