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JAMB and WAEC Chemistry questions: Rates of chemical reaction

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

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

  1. Question 21· Rates of chemical reaction· JAMB

    Powdered marble reacts faster with dilute acid than lumps of marble of the same mass because the powder has a

    Explanation and discussion

  2. Question 22· Rates of chemical reaction· JAMB

    An enzyme is

    Explanation and discussion

  3. Question 23· Rates of chemical reaction· WAEC

    Which apparatus is suitable for following the rate of a reaction that gives off a gas?

    Explanation and discussion

  4. Question 24· Rates of chemical reaction· JAMB

    When dilute hydrochloric acid reacts with marble chips, the gas collected to follow the rate is

    Explanation and discussion

  5. Question 25· Rates of chemical reaction· WAEC

    Increasing temperature increases reaction rate mainly because

    Explanation and discussion

  6. Question 26· Rates of chemical reaction· WAEC

    Which of these will increase the rate of reaction between calcium trioxocarbonate(IV) and dilute hydrochloric acid?

    Explanation and discussion

  7. Question 27· Rates of chemical reaction· WAEC

    Manganese(IV) oxide speeds up the decomposition of hydrogen peroxide. It acts as

    Explanation and discussion

  8. Question 28· Rates of chemical reaction· JAMB

    A catalyst increases the rate of a reaction by

    Explanation and discussion

  9. Question 29· Rates of chemical reaction· WAEC

    A catalyst speeds up a chemical reaction by

    Explanation and discussion

  10. Question 30· Rates of chemical reaction· WAEC

    In the decomposition of hydrogen peroxide, manganese(IV) oxide

    Explanation and discussion

  11. Question 31· Rates of chemical reaction· WAEC

    Powdered marble reacts faster with acid than lumps because

    Explanation and discussion

  12. Question 32· Rates of chemical reaction· JAMB

    The decomposition of hydrogen peroxide into water and oxygen is catalysed by

    Explanation and discussion

  13. Question 33· Rates of chemical reaction· JAMB

    A suitable unit for the rate of a reaction is

    Explanation and discussion

  14. Question 34· Rates of chemical reaction· JAMB

    Raising the temperature increases the rate of a reaction mainly because

    Explanation and discussion

  15. Question 35· Rates of chemical reaction· WAEC

    The rate of a reaction that produces a gas can be followed by measuring the

    Explanation and discussion

  16. Question 36· Rates of chemical reaction· JAMB

    Which of the following does NOT increase the rate of a reaction?

    Explanation and discussion

  17. Question 37· Rates of chemical reaction· WAEC

    Increasing the temperature increases the rate of a reaction mainly because

    Explanation and discussion

  18. Question 38· Rates of chemical reaction· WAEC

    Food preservatives work mainly by

    Explanation and discussion

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