SELECT * FROM question_mgmt as q WHERE id=3949 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=8 AND subId=16 AND chapterId=181 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 9th science Is Matter Around Us Pure what is meant by a pure substance

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What is meant by a pure substance?

Answer:

The substances which are formed by only one kind of particles and having a constant composition of chemicals and characteristic properties throughout the sample.


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  • Answered by Ekta Mehta
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  • Answered by Ekta Mehta
  • 4 months ago

Taking Screenshots on your Samsung Galaxy M31s is very easy and quick.

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