Chemistry - Grade 12 -2023 G.C

Grade 12 students can now access their exam results by visiting the Educational Assessment and Examination Services (EAES) website.


10. Which type of organic substances would be produced by heating a mixture of a carboxylic acid and an alcohol in the presence of H2SO4?

  1. Ethers
  2. Esters
  3. Aldehydes
  4. Ketones


11. The heat change at constant pressure that results when 1 mole of a compound is formed from its elements in their standard states is

  1. standard enthalpy of formation
  2. standard reduction potential
  3. standard enthalpy of reaction
  4. standard entropy of reaction


12. What is a redox reaction? It is a reaction in which

  1. an acid and a base neutralize each other.
  2. atoms or ions of two compound exchange bonding partners.
  3. electrons are transferred between species.
  4. two insoluble ions in compounds form an insoluble products.


13. Which one of the following explains how electroplating takes place?

  1. Metal is deposited on the anode by reduction of ions in the electrolyte solution.
  2. The cations in the electrolyte are supplied either by the added salt or from oxidation of the anode.
  3. The object to be electroplated either metal or graphite-coated plastic constitutes the anode.
  4. The electrolyte is an aqueous solution of a salt of the plated metal.


14. How does the equivalent mass of a base is obtained?

  1. OH- ions furnished by one formula unit of a base." >By dividing its number of equivalent by the number of OH- ions furnished by one formula unit of a base.
  2. OH- ions furnished by one formula unit of a base." >By multiplying its number of equivalent by the number of OH- ions furnished by one formula unit of a base.
  3. OH- ions furnished by one formula unit of a base." >By dividing its molar mass by the number of OH- ions furnished by one formula unit of a base.
  4. OH- ions furnished by one formula unit of a base." >By multiplying its molar mass by the number of OH- ions furnished by one formula unit of a base.


We have provided these questions from previous years grade 12 Ethiopian Secondary School Leaving Certificate Examination (ESSLCE) exams with the sole purpose of assisting students in their studies and preparations for upcoming exams. Please be aware that these questions are not indicative of future exam content. Good luck with your studies!

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