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Chemistry WAEC Past Questions

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1806

The region around the nucleus where electrons can be located is called?

  • A. a spectra
  • B. an orbital
  • C. a quanta
  • D. a field
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1807

Protons and electrons are called fundamental particles because they----------

  • A. are indivisible
  • B. have different charges
  • C. are the lightest particles
  • D. are found in all matter
View Answer & Discuss (6) WAEC 2021

Consider the following energy profile diagram and use it to answer the question that follows

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1808

The activation energy of the reaction is

  • A. E\(_{A}\)
  • B. E\(_{B}\)
  • C. E\(_{C}\)
  • D. E\(_{D}\)
View Answer & Discuss (4) WAEC 2021
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1809

The enthalpy change of the reaction is------------

  • A. E\(_{A}\)
  • B. E\(_{B}\)
  • C. E\(_{C}\)
  • D. E\(_{D}\)
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1810

The energy profile diagram illustrates-------------

  • A. an endothermic reaction
  • B. an exothermic reaction
  • C. a spontaneous reaction
  • D. a redox reaction
View Answer & Discuss (1) WAEC 2021
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