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WAEC Chemistry questions: Separation of mixtures and purification

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

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All topicsAcids, bases and salts · 26Air · 16Atomic structure and bonding · 26Chemical combination · 27Chemical equilibrium · 16Chemistry and industry · 17Electrolysis · 19Energy changes · 16Environmental pollution · 15Kinetic theory of matter and gas laws · 18Metals and their compounds · 23Non-metals and their compounds · 22Organic compounds · 29Oxidation and reduction · 19Rates of chemical reaction · 16Separation of mixtures and purification · 18Solubility · 16Water · 18

  1. Question 1· Separation of mixtures and purification· WAEC

    The liquid that passes through the filter paper during filtration is the

    Explanation and discussion

  2. Question 2· Separation of mixtures and purification· WAEC

    A mixture of ammonium chloride and sodium chloride is separated by

    Explanation and discussion

  3. Question 3· Separation of mixtures and purification· WAEC

    A mixture of chalk and water is separated by

    Explanation and discussion

  4. Question 4· Separation of mixtures and purification· WAEC

    In paper chromatography of a black ink, the component that travels furthest up the paper is the one that is

    Explanation and discussion

  5. Question 5· Separation of mixtures and purification· WAEC

    The best method of obtaining crystals of copper(II) tetraoxosulphate(VI) from its solution is

    Explanation and discussion

  6. Question 6· Separation of mixtures and purification· WAEC

    Ogogoro is obtained by distilling fermented palm wine. The separation depends on a difference in the components'

    Explanation and discussion

  7. Question 7· Separation of mixtures and purification· WAEC

    The method used to separate sand from water is

    Explanation and discussion

  8. Question 8· Separation of mixtures and purification· WAEC

    Which method is best for separating the coloured components of ink?

    Explanation and discussion

  9. Question 9· Separation of mixtures and purification· WAEC

    A separating funnel is used to separate

    Explanation and discussion

  10. Question 10· Separation of mixtures and purification· WAEC

    The purity of a solid can be tested by finding its

    Explanation and discussion

  11. Question 11· Separation of mixtures and purification· WAEC

    Iodine can be separated from a mixture with sand by

    Explanation and discussion

  12. Question 12· Separation of mixtures and purification· WAEC

    A mixture of iodine crystals and sand can best be separated by

    Explanation and discussion

  13. Question 13· Separation of mixtures and purification· WAEC

    A pure substance has

    Explanation and discussion

  14. Question 14· Separation of mixtures and purification· WAEC

    Which method recovers solid salt from brine collected at a salt lake?

    Explanation and discussion

  15. Question 15· Separation of mixtures and purification· WAEC

    Iodine can be separated from sand by

    Explanation and discussion

  16. Question 16· Separation of mixtures and purification· WAEC

    Kerosene and water poured into one container form two layers. Which apparatus separates them most simply?

    Explanation and discussion

  17. Question 17· Separation of mixtures and purification· WAEC

    Which method is best for separating a mixture of ethanol and water?

    Explanation and discussion

  18. Question 18· Separation of mixtures and purification· WAEC

    In paper chromatography, the component that travels furthest is the one that is

    Explanation and discussion

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