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4666

Iodine could be separated from the mixture of iodine and Calcium chloride by

  • A. Evaporation
  • B. Sublimation
  • C. fractional distillation
  • D. fractional crystallization
View Answer & Discuss (4) WAEC 2025
4667

Sodium chloride is used in the following processes except

  • A. treatment of water
  • B. manufacturing of chloride
  • C. preservation of food
  • D. separation of soap glycerol
View Answer & Discuss (2) WAEC 2025
4668

Which of the following bonds is not an intermolecular force?

  • A. Hydrogen bond
  • B. Van der waal's
  • C. dipole-dipole
  • D. metallic bond
View Answer & Discuss (1) WAEC 2025
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4669

All the following compounds are ionic except

  • A. AgCl
  • B. KNO\(_3\)
  • C. NO\(_2\)
  • D. (NH\(_4\))\(_2\)CO\(_3\)
View Answer & Discuss (1) WAEC 2025
4670

The metal carbonate that would not decompose when heated strongly is

  • A. Al\(_2\)CO\(_3\)
  • B. CaCO\(_3\)
  • C. MgCO\(_3\)
  • D. Na\(_2\)CO\(_3\)
View Answer & Discuss (1) WAEC 2025
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WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076
WAEC offline past questions - with all answers and explanations in one app - Download for free
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts