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Tuesday, 11 August 2026
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Chemistry Past Questions and Answers

Post Utme Chemistry Questions

Question 741:
During chemical reactions, particles must collide with proper:
  • A Orientation and energy
  • B Shape and density
  • C Magnetic attraction force
  • D Pressure and colour
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Question 742:
Reactions occur faster at high concentration because:
  • A Molecular motion decreases
  • B More effective collisions occur
  • C Fewer particles are present
  • D Product formation stops
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Question 743:
The name “butyne” shows the compound contains:
  • A Four carbons double bond
  • B Five carbons single bond
  • C Four carbons hydroxyl
  • D Four carbons triple bond
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Question 744:
Which condition increases the chances of effective collisions:
  • A Decreased molecular energy
  • B Increased reactant concentration
  • C Lower particle movement
  • D Reduced reactant quantity
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Question 745:
Which prefix is used for six carbon atoms?
  • A Pent-
  • B But-
  • C Hex-
  • D Oct-
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