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Chemistry 2005 WAEC Past Questions

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11
The activation energy of a reaction can be altered by
  • A. adding a reducing agent
  • B. applying a high pressure
  • C. using a catalyst
  • D. changing the temperature
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12
Which of the following factors does not affect the rate of reaction of CaCO3 with HCI?
  • A. temperature of the reaction
  • B. solubility of the CaCO3
  • C. concentration of the HCI
  • D. surface area of the CaCO3
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13
When X is heated with manganese (IV) oxide, oxygen is produced X is
  • A. KCI
  • B. KCIO3
  • C. CaCO3
  • D. ZnCO3
View Answer & Discuss (1) WAEC 2005
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
14
Which of the following statements is not a postulate of the kinetic theory of gases?
  • A. Molecules move with the same speed
  • B. intermolecular forces are negligible
  • C. Molecules are in a state of constant random motion
  • D. collision between molecules is elastic
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15

HNO3 does not usually react with metals to liberate hydrogen because HNO3 is

  • A. a strong acid
  • B. a corrosive acid
  • C. an oxidizing agent
  • D. a nitrating agent
View Answer & Discuss (8) WAEC 2005
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC offline past questions - with all answers and explanations in one app - Download for free
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208