Define the terms (i) Crystalline solids (ii) Frenkel defects (iii) n-type semi-conductors.

Define the terms (i) F-centres (ii) n-type semi-conductors (iii) Ferrimagnetism.

(a) Define the terms crystalline and amorphous solids. (b) Explain Schottky defect with an example.

Explain the following terms with suitable examples: (i) Schottky defect (ii) Frenkel defect (iii) Interstitials and (iv) F-centre.

Which of the following point defect are shown by AgBr crystals: (i) Schottky defect (ii) Frenkel defect (iii) Metal excess defect (iv) Metal deficiency defect-

What are the charge carriers in (i) conductors (ii) insulators and (iii) semiconductors ?

Discuss the term- ( i) Vernalization (ii) Senescence (iii) Phytochrome (iv) Hypogeal germination.

Name a crystalline solid which is likely to develop both Schottky and Frenkel defects.

Explain with suitable examples the following : (a) n-type and p-type semi-conductors (b) F-centres (c) Ferromagnetism.

A crystalline solid has the given characteristics: (i) soft (ii) very low melting point (iii) non-conductor of heat and electricity both in solid and liquid states. Which of the following crystalline solids generally show these characteristics-

Why the defects of the crystalline solids are called thermodynamic defects?