SPM Chemistry Set 1D

  1. Zinc reacts with hydrochloric acid according to the equation below:
    Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g)
    Which of the following graphs between volume (V) of hydrogen against time (t) is correct?

  2. Diagram below shows the apparatus set-up involves in the preparation of a soluble salt.

    Which of the following could be X ?

    1. Sodium carbonate
    2. Potassium carbonate
    3. Magnesium carbonate
    4. Ammonium carbonate
  3. Diagram below shows the apparatus set-up for the reaction between an acid and a metal to produce a salt.

    Which of the following is not metal X?

    1. Magnesium
    2. Copper
    3. Lead
    4. Zinc
  4. In the saponification process, concentrated sodium hydroxide solution is added to boiling vegetable oils to produce X and soap. What is X?
    1. Glycerol
    2. Ethanol
    3. Propanoic acid
    4. Ethyl methanoate
  5. The following thermochemical equation shows the formation of lead (II) sulphate.
    Pb2+ + SO42- → PbSO4
    ΔH = -50 kJ mol−1
    Which of the following statements is true regarding the reaction?

    1. White precipitate is formed
    2. Reaction is exothermic
    3. Temperature decreases during the reaction
    4. The heat released when 0.2 mole of lead(II) ions react is 10.0 kJ
  6. Which of the following gases contains 0.35 mol of atoms at room temperature and pressure?
    [1 mole of a gas occupies the volume of 24 dm3 at room temperature and pressure]

    1. 4 dm3 Ar
    2. 4 dm3 Cl2
    3. 4 dm3 CH4
    4. 4 dm3 CO2
  7. Diagram below shows the label on a bottle of an orange juice.

    Which substance will enhanced the flavour and smell of the orange juice?

    1. Octyl ethanoate
    2. Sulphur dioxide
    3. Ascorbic acid
    4. Tatrazine
  8. The following equation represents the reaction between calcium carbonate and hydrochloric acid. Which of the following factors cannot increase the rate of this reaction?
    CaCO3 (s) + 2HCl(aq) → CaCl2(s) + H2O(l) + CO2(g)

    1. Decrease the size of calcium carbonate
    2. Increase the temperature of the mixture
    3. Increase the concentration of hydrochloric acid
    4. Increase the volume of hydrochloric acid
  9. The rusting of an iron nail in a test tube containing water can be speed up by
    1. Coiling it with a more electropositive metal
    2. Placing the test tube in a refrigerator
    3. Adding sodium chloride into the test tube
    4. Pouring a layer of oil on top of the water in the test tube
  10. Diagram below shows the position of element of T and U in the Periodic Table.

    Which of the following is the formula of compound formed when T element reacts with U element?

    1. TU2
    2. T2U3
    3. T2U
    4. T3U2

 

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