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WAEC Chemistry questions

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

AllJAMBWAEC
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 221· Non-metals and their compounds· WAEC

    Moist chlorine bleaches litmus paper because it forms

    Explanation and discussion

  2. Question 222· Non-metals and their compounds· WAEC

    Carbon(IV) oxide is used in fire extinguishers because it

    Explanation and discussion

  3. Question 223· Non-metals and their compounds· WAEC

    A gas that turns moist red litmus blue is

    Explanation and discussion

  4. Question 224· Non-metals and their compounds· WAEC

    Which of these non-metals is a liquid at room temperature?

    Explanation and discussion

  5. Question 225· Non-metals and their compounds· WAEC

    Which gas forms dense white fumes when it meets hydrogen chloride gas?

    Explanation and discussion

  6. Question 226· Non-metals and their compounds· WAEC

    Sulphur(IV) oxide bleaches coloured materials by

    Explanation and discussion

  7. Question 227· Non-metals and their compounds· WAEC

    Which allotrope of carbon conducts electricity?

    Explanation and discussion

  8. Question 228· Non-metals and their compounds· WAEC

    Diamond and graphite are

    Explanation and discussion

  9. Question 229· Non-metals and their compounds· WAEC

    The brown ring test is used to identify

    Explanation and discussion

  10. Question 230· Non-metals and their compounds· WAEC

    The gas that burns with a blue flame and is very poisonous is

    Explanation and discussion

  11. Question 231· Non-metals and their compounds· WAEC

    Ammonia is collected by upward delivery because it is

    Explanation and discussion

  12. Question 232· Non-metals and their compounds· WAEC

    A gas given off by a fermenting palm-wine jar turns lime water milky. The gas is

    Explanation and discussion

  13. Question 233· Non-metals and their compounds· WAEC

    Ammonia gas is collected by

    Explanation and discussion

  14. Question 234· Non-metals and their compounds· WAEC

    Chlorine bleaches damp litmus paper because it forms

    Explanation and discussion

  15. Question 235· Non-metals and their compounds· WAEC

    Moist chlorine bleaches litmus paper because it reacts with water to form

    Explanation and discussion

  16. Question 236· Non-metals and their compounds· WAEC

    Concentrated tetraoxosulphate(VI) acid turns sugar into a black mass because it acts as a

    Explanation and discussion

  17. Question 237· Non-metals and their compounds· WAEC

    Allotropes of carbon include

    Explanation and discussion

  18. Question 238· Non-metals and their compounds· WAEC

    The gas that turns lime water milky is

    Explanation and discussion

  19. Question 239· Non-metals and their compounds· WAEC

    Carbon dioxide turns lime water milky due to the formation of

    Explanation and discussion

  20. Question 240· Non-metals and their compounds· WAEC

    Chlorine is used in the treatment of water because it

    Explanation and discussion

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