O Level Chemistry MCQs – Certification Test 234

Pure Substances and Mixtures MCQs (Question 234) – App & e-Book Download

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MCQ 234: What is true about pure substances?

they have fixed and exact boiling point
they have fixed and exact melting points
they form only one post on chromatogram
all of above

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Pure Substances & Mixtures MCQs App & e-Book – O Level Chemistry Learning Guide

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