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Chemistry WAEC Past Questions

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1251

Which of the following gases is not acidic?

  • A. \(SO_{3}\)
  • B. \(NO_{2}\)
  • C. \(Co_{2}\)
  • D. CO
View Answer & Discuss (3) WAEC 2017
1252

A hydrocarbon contained 14.3% hydrogen. The empirical formula for the hydrocarbon is   [H= 1.0, C= 12.0]

  • A. \(CH\)
  • B. \(CH_{2}\)
  • C. \(CH_{3}\)
  • D. \(CH_{4}\)
View Answer & Discuss WAEC 2017
1253

Which of the following statements is NOT a chemical property of an acid?

  • A. Evolution of ammonia when heated with ammonium salts
  • B. Evolution of carbon dioxide gas when added to a trioxocarbonate (IV) salt
  • C. Formation of salt and water with alkalis
  • D. Formation of salt and hydrogen gas with reactive metals
View Answer & Discuss WAEC 2017
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1254

Halogens generally react with metals to form

  • A. alkalis
  • B. acids
  • C. bases
  • D. salts
View Answer & Discuss WAEC 2017
1255

Potassium Chloride solid does not conduct electricity because

  • A. it is a covalent compound
  • B. strong cohesive forces make its ions immobile
  • C. strong cohesive force makes its molecule immobile
  • D. each of potassium and chlorine structures contain noble gas structure
View Answer & Discuss WAEC 2017
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