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Chemistry 2018 JAMB Past Questions

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16

Which of the following statements is correct about the periodic table?

  • A. Elements in the same period have the same number of valence electrons
  • B. The valence electrons of the elements in the same period increase progressively across the period
  • C. Elements in the same group have the same number of electron shells
  • D. The non-metallic Properties of the elements tend to decrease across each period
View Answer & Discuss (5) JAMB 2018
17

The periodic classification is an arrangement of the elements

  • A. atomic weights
  • B. isotopic weights
  • C. molecular weights
  • D. atomic numbers
View Answer & Discuss (1) JAMB 2018
18

If 1 litre of 2.2M sulphuric acid is poured into a bucket containing 10 litres of water and the resulting solution mixed thoroughly, the resulting sulphuric acid concentration will be

  • A. 2.2M
  • B. 1.1M
  • C. 0.2M
  • D. 0.11M
View Answer & Discuss (5) JAMB 2018
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19

In the shown experiment (Fig. 1) the litmus paper will initially

  • A. be bleached
  • B. turn green
  • C. turn red
  • D. turn blue
View Answer & Discuss (6) JAMB 2018
20

The boiling of fat and aqueous caustic soda is referred to as

  • A. hydrolysis
  • B. esterification
  • C. acidification
  • D. saponification
View Answer & Discuss (1) JAMB 2018
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