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A eutectic mixture is not a compound because its two constituents

  • A.cannot be separated by any means
  • B.melt over a range of temperature rather than sharply
  • C.remain separate phases in the solid
  • D.combine in a fixed stoichiometric ratio

Answer: C

Correct answer: remain separate phases in the solid

A eutectic solid is an intimate mechanical mixture of two distinct crystalline phases, visible as separate constituents under a microscope, not a single phase of fixed stoichiometry. Its composition is fixed by the phase diagram rather than by valency, and it varies with pressure, which a compound’s would not.

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