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Chemistry 2017 JAMB Past Questions

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26

The reaction of halogens with alkanes in the presence of sunlight is an example of

  • A. oxidation reaction
  • B. addition reaction
  • C. hydrogenation reaction
  • D. substitution reaction
View Answer & Discuss (1) JAMB 2017
27

The enzyme used in the hydrolysis of starch to dextrin and maltose is?

  • A. lipase
  • B. amylase
  • C. invertase
  • D. zymase
View Answer & Discuss (2) JAMB 2017
28
The alkyl group is represented by the general formula
  • A. CnH2n
  • B. CnH2n − 2
  • C. CnH2n + 1
  • D. CnH2n + 2
View Answer & Discuss (5) JAMB 2017
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29

Cu\(_2\)S(g) + O\(_2\)(g) → 2Cu + SO\(_2\)(g)
What is the change in the oxidation number of copper in the reaction?

  • A. 0 to + 2
  • B. 0 to + 1
  • C. + 1 to 0
  • D. + 2 to + 1
View Answer & Discuss (8) JAMB 2017
30

In the diagram above. X is

  • A. SO3
  • B. SO2
  • C. S
  • D. H2S
View Answer & Discuss (9) JAMB 2017
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