The sharp melting point of crystalline solids is due to….
a. A regular arrangement of constituent particles observed over a short distance in the crystal lattice
b. A regular arrangement of constituent particles observed over a long distance in the crystal lattice
c. Same arrangement of constituent particles in different directions
d. Different arrangement of constituent particles in different directions
Ans. b
Explanation : Crystalline solid has regular arrangement of constituent particles observed over a long distance in the crystal lattice. Due to this regular arrangement crystalline solid have sharp melting point.
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