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Chemistry Past Questions

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4156

The by-product of fermentation of sugar is

  • A. carbon(IV) oxide.
  • B. ethanoic acid.
  • C. propanol
  • D. propan-1, 2, 3- triol.
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4157

Which of the following sugars is a product of the condensation of monosaccharides?

  • A. galactose
  • B. maltose
  • C. glucose
  • D. fructose
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4158

The cleansing effect of soap is low in acidic water because of

  • A. the formation of unionized fatty acid.
  • B. increase in the pH of the soap molecules.
  • C. anti-biodegradable effect of hydrogen ions
  • D. the hardness of the acidic water.
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4159

The following compounds are condensation polymers except

  • A. nylon
  • B. protein
  • C. starch
  • D. polyethene
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4160

What amount of electricity is required to deposit one mole of aluminium from a solution of AlCl3?

  • A. One Faraday
  • B. One ampere
  • C. Three Faradays
  • D. Three amperes
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