A crystalline solid
a. Changes abruptly form solid to liquid when heated
b. Has no definite melting point
c. Undergoes deformation of its geometry easily
d. Has an irregular 3- dimensional arrangements
e. Softens slowly
Ans. a
Explanation : In crystalline solid there is perfect arrangement of the constituent particles only at 0 K. As the temperature increases the chance that a lattice site may be unoccupied by an ion increases. As the number of defects increases with temperature solid change in liquid
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