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Chemistry 2020 JAMB Past Questions

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31

The chlorinated alkane often used industrially to remove grease is?

  • A. Tetrachloromethane
  • B. Chloromethane
  • C. Trichloromethane
  • D. Dichloromethane
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32

What mass of water is produced when 8.0g of hydrogen reacts with excess oxygen?

  • A. 8.0g
  • B. 16.0g
  • C. 36.0g
  • D. 72.0g
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33

Proteins in acid solution undergo?

  • A. Substitution
  • B. Fermentation
  • C. Hydrolysis
  • D. Polymerisation
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34

The general formula for the Alkanals is?

  • A. R\(_2\)CO
  • B. RCHO
  • C. ROH
  • D. RCOOR
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35

When cathode rays are deflected onto the electrode of an electrometer, the instrument becomes?

  • A. Bipolar
  • B. Negatively charged
  • C. Positively charged
  • D. Neutral
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