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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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