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Is Matter Around Us Pure ? — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceIs Matter Around Us Pure ?1 Mark
Question
Which one of the following statements is incorrect:
✓

Answer

  1. Air is a heterogeneous mixture
Explanation:
All elements and compounds are homogeneous, as they are pure substances.
A mixture can be homogeneous or heterogeneous.
So, options A, B and C are correct statements.

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