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Wednesday, 20 May 2026
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Chemistry Past Questions and Answers

Chemistry Questions

Question 481:
Which of the following are made by the process of polymerization?
  • A Nylon and soap
  • B Nylon and artificial rubber
  • C Soap and butane
  • D Margarine and nylon
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Question 482:
Starch can be converted to ethyl alcohol by?
  • A Distillation
  • B Fermentation
  • C Isomerization
  • D Cracking
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Question 483:
The movement of liquid molecules from the surface of the liquid to the gaseous phase above it is known as?
  • A Brownian movement
  • B Condensation
  • C Evaporation
  • D Liquefaction
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Question 484:
What mass of a divalent metal M (atomic mass = 40) would react with excess hydrogen gas measured at S.T.P?
  • A 8.0 g
  • B 4.0 g
  • C 0.8 g
  • D 0.4 g
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Question 485:
In the solubility curve above, water at 98<sup style='font-size: smaller;'>o</sup>C is saturated with KCL and KCIO <sub style='font-size: smaller;'>3</sub> What is the percentage of KCL impurity in the crystals formed when the solution is cooled to 30 <sup style='font-size: smaller;'>o</sup>C?
  • A 51.5
  • B 45.5
  • C 34.5
  • D 26.5
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