Pure and impure substance — task. Science CBSE, Class 9 New.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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choose the correct answer:

1. A pure substance contains:

Different types of particles
Only one type of particle
Only liquids
Only solids

2. Which one of the following is a characteristic of a mixture?

Only one type of particle
Components cannot be separated
Components retain their properties
Components are present in a fixed ratio

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