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Tuesday, 16 June 2026
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Chemistry Past Questions and Answers

Post Utme Chemistry Questions

Question 191:
In an endothermic reaction, if there is a loss in entropy, the reaction will ____________
  • A Not be spontaneous
  • B Be at equilibrium
  • C Be indeterminate
  • D Be spontaneous
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Question 192:
In the laboratory preparation of ammonia, the flask is placed in a slanting position, so as to ____________
  • A Enhance the speed of reaction
  • B Prevent formation of precipitate
  • C Prevent condensed water from breaking the reaction flask
  • D Enable the proper mixing of the reactant in the flask.
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Question 193:
H | CH, - CCH, - CH=CH: | CHa <br/>The IUPAC nomenclature for the compound above is ____________
  • A 2-methylpent-I-ene
  • B 2-methylpent-Il-ene
  • C 4methylpent-1-ene
  • D 3methylpent-2-ene
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Question 194:
Which of the following are structural isomers?
  • A Propanoic acid and propan-1,2diol
  • B Propanol and propanone
  • C Ethanoic acid propanoic acid
  • D Ethan-1,2-diol and ethanoic acid
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Question 195:
In the purification of impure sample of ethyl ethanoate synthesized by esterification, concentrated tetraoxocarbonate (IV) solution is used to remove
  • A Water basic impurities
  • B Basic impurities
  • C Acidic impurities
  • D Ethoxyethane
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