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Chemistry Past Questions

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1
Which of the following statements is NOT correct?
  • A. The average kinetic energy of a gas is directly proportional to its temperature
  • B. At constant tempearture, the volume of a gas increases as the pressure increases
  • C. The pressure of a gas is inversely proportional to its volume
  • D. The temperature of a gas is directly proportional to its volume
  • E. The collisions of molecules with each other are inelastic
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2

Zinc Oxide is a

  • A. Basic Oxide
  • B. Acidic Oxide
  • C. Amphoteric Oxide
  • D. Neutral Oxide
  • E. Reactive Oxide
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3

When sodium chloride and metallic sodium are each dissolved in water

  • A. both processes are exothermic
  • B. both processes are endothermic
  • C. the dissolution of metallic sodium is endothermic
  • D. the dissolution of metallic sodium is exothermic
  • E. the dissolution of sodium chloride is explosive
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4
The periodic classification of elements is an arrangement of the elements in order of their
  • A. Atomic Weights
  • B. Isotopic Weights
  • C. Molecular Weights
  • D. Atomic Numbers
  • E. Atomic Masses
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5

In the reaction between sodium hydroxide and sulphuric acid solutions, what volume of 0.5 molar sodium hydroxide would exactly neutralise 10cm3 of 1.25 molar sulphuric acid?

  • A. 5cm3
  • B. 10cm3
  • C. 20cm3
  • D. 25cm3
  • E. 50cm3
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