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WAEC Chemistry Practice Questions & Explanations

Try 20 of 169+ WAEC Chemistry questions as a free quiz — select your answers, submit, and see your score with a full explanation for every one.

  1. 1.
    Chemistry is the branch of science that deals with the study of?
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    Chemistry is the study of matter, its composition, properties, and the changes it undergoes.
  2. 2.
    Which of the following is a laboratory safety rule?
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    Reading labels helps identify chemicals and prevents accidents.
  3. 3.
    The laboratory coat is worn mainly to?
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    Laboratory coats protect the body and clothes from chemical spills.
  4. 4.
    Which of the following is considered matter?
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    Matter is anything that has mass and occupies space; air satisfies both conditions.
  5. 5.
    Safety goggles are used in the laboratory to protect the?
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    Safety goggles protect the eyes from chemical splashes and flying particles.
  6. 6.
    The scientific study of the composition and properties of substances is known as?
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    Chemistry focuses on the composition, properties, and reactions of substances.
  7. 7.
    Which laboratory apparatus is commonly used for measuring the volume of liquids?
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    A measuring cylinder is used to measure the volume of liquids accurately.
  8. 8.
    When heating a test tube, it should be pointed?
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    A heated test tube should always be pointed away from people to avoid injury.
  9. 9.
    Which of the following is NOT a branch of chemistry?
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    Astronomy Chemistry is not a recognized branch of chemistry.
  10. 10.
    What should you do immediately after a chemical spill on your skin?
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    Chemical spills should be washed off immediately with plenty of water.
  11. 11.
    The laboratory is a place where?
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    A laboratory is designed for scientific experiments and investigations.
  12. 12.
    Which of the following laboratory apparatus is used for heating substances?
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    A Bunsen burner provides heat for laboratory experiments.
  13. 13.
    Matter is anything that has?
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    Matter has mass and occupies space.
  14. 14.
    Which safety device is used to put out small laboratory fires?
    Show explanation
    Fire extinguishers are used to control and extinguish fires.
  15. 15.
    Before carrying out an experiment, a student should first?
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    Understanding the procedure helps prevent mistakes and accidents.
  16. 16.
    Which branch of chemistry deals with carbon compounds?
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    Organic chemistry studies carbon-containing compounds.
  17. 17.
    Why is eating prohibited in the chemistry laboratory?
    Show explanation
    Food may become contaminated with harmful chemicals, leading to poisoning.
  18. 18.
    Which of the following best describes chemistry?
    Show explanation
    Chemistry deals with matter, its properties, and the changes it undergoes.
  19. 19.
    A student accidentally breaks a piece of laboratory glassware. The first action should be to?
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    All accidents and breakages should be reported immediately to the teacher or laboratory supervisor.
  20. 20.
    The importance of laboratory safety rules is to?
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    Laboratory safety rules are designed to protect people and equipment from harm.
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