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Question

Which mixture is incorrectly labelled?


  1. homogeneous-salt dissolved in water

  2. homogeneous-gasoline

  3. heterogeneous-aqueous solution of alcohol

  4. Heterogeneous-the oxygen and nitrogen in a scuba tank


Solution

The correct option is D

Heterogeneous-the oxygen and nitrogen in a scuba tank


The oxygen and nitrogen are homogeneous mixture in a scuba tank because we have a mixture in which we can't see the phases, and also invisible gases are mixed together. If heterogeneous we could see the mixtures different phases.

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