Which one of the following compounds has a sharp melting point?
Correct answer: A. Pure C6H22O6
- A. Pure C6H22O6
- B. Impure NaCl
- C. Glass
- D. Mixture of the above two
Explanation
Pure substances generally have sharp melting points. When a pure compound like glucose is heated, it undergoes a phase change from solid to liquid at a specific temperature, resulting in a sharp melting point.
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About Crystalline Solids
Crystalline solids contain particles arranged in a regular repeating lattice described by a unit cell. Their study includes coordination number, packing efficiency, density, anisotropy, cleavage, polymorphism and common crystal systems, along with ionic, molecular, covalent network and metallic crystals. Crystalline order differs from the random arrangement of amorphous solids.
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