In crystallization if the solvent is inflammable then direct heating is________________?
Correct answer: B. avoided
- A. needed
- B. avoided
- C. depends on temperature
- D. crystallization does not involve heating
Explanation
An inflammable solvent can ignite when heated directly over a flame, so direct heating is avoided and a safer heat source such as a water bath is used. Students may choose that heating is needed because crystallization often requires dissolving a solid in hot solvent, but the issue here is the unsafe method of direct heating.
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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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