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Chemistry WAEC Past Questions

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2026

The IUPAC name of the compound CH\(_3\)CHClCH\(_2\)OH is

  • A. chloropropanol
  • B. 1-chloropropan-1-ol
  • C. 2-chloropropan-3-ol
  • D. 2-chloropropan-1-ol
View Answer & Discuss (5) WAEC 2025
2027

Neutral atom of Neon with atomic number 10 is isoelectronic with

  • A. K\(^+\)
  • B. Mg\(^{2+}\)
  • C. Ca\(^{2+}\)
  • D. Li\(^+\)
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2028

Which of the following species is the most powerful reducing agent?

  • A. Bromine atom
  • B. Chlorine atom
  • C. Fluoride atom
  • D. Iodine atom
View Answer & Discuss (2) WAEC 2025
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2029

The electron configuration of element Y is 1S\(^2\)2S\(^2\)2P\(^6\)3S\(^2\)3P\(^4\). Y, therefore,

  • A. has mass number of 16
  • B. has three unpaired electron
  • C. belongs to period 4
  • D. belongs to group VI
View Answer & Discuss (5) WAEC 2025
2030

Which of the following alkanols is tertiary?

  • A. 2-methylpentan-2-ol
  • B. 2-methylpentan-1-ol
  • C. pentan-3-ol
  • D. pentan-2-ol
View Answer & Discuss (3) WAEC 2025
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