JAMB and WAEC Chemistry questions: Separation of mixtures and purification

42 questions with answers and explanations. Tap an option to check yourself.

All topics Acids, bases and salts · 58 Air · 37 Atomic structure and bonding · 59 Chemical combination · 58 Chemical equilibrium · 37 Chemistry and industry · 35 Electrolysis · 41 Energy changes · 38 Environmental pollution · 32 Kinetic theory of matter and gas laws · 45 Metals and their compounds · 47 Non-metals and their compounds · 45 Organic compounds · 72 Oxidation and reduction · 41 Rates of chemical reaction · 38 Separation of mixtures and purification · 42 Solubility · 36 Water · 39

Question 41· Separation of mixtures and purification· JAMB
Decantation is used to separate
Explanation and discussion
Question 42· Separation of mixtures and purification· JAMB
In a paper chromatogram, a spot moves 3 cm while the solvent front moves 6 cm. Find the Rf value of the spot.
Explanation and discussion

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