NECO offline past questions - All questions, answers & explanations in one app 25712
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Chemistry 2019 WAEC Past Questions

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NECO offline past questions - All questions, answers & explanations in one app 25712
1

The periodic table is an arrangement of elements according to their? 

  • A. Oxidation number
  • B. Atomic number
  • C. Mass number
  • D. Nunber of neutrons
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2

A solid with higher melting and boiling points is likely to be?

  • A. Covalent compound
  • B. A Dative compound
  • C. An Electrovalent compound
  • D. A Non-metal
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3

Which of the following metals reacts slowly with cold water?

  • A. Iron
  • B. Silver
  • C. Calcium
  • D. Pottassium
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NECO offline past questions - All questions, answers & explanations in one app 25712
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4

which of the following elements has the highest ionization energy?

  • A. Calcium
  • B. Chlorine
  • C. Flourine
  • D. Magnesium
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5

The bleaching action of chlorine is through the process?

  • A. Hydration
  • B. Hydrolysis
  • C. Reduction
  • D. Oxidation
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