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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC offline past questions - with all answers and explanations in one app - Download for free
4231

Balance the following redox reaction:
Fe\(_2\)O\(_3\) + CO → Fe + CO\(_2\)

  • A. Fe\(_2\)O\(_3\) + CO → 2Fe + 2CO\(_2\)
  • B. 2Fe\(_2\)O\(_3\) + 3CO → 4Fe + 3CO\(_2\)
  • C. Fe\(_2\)O\(_3\) + 2CO → 2Fe + 2CO\(_2\)
  • D. Fe\(_2\)O\(_3\) + 3CO → 2Fe + 3CO\(_2\)
View Answer & Discuss (3) JAMB 2023
4232

What is the trend for ionization energy across a period in the periodic table?

  • A. Increases from left to right.
  • B. Remains constant
  • C. Varies randomly
  • D. Decreases from left to right
View Answer & Discuss (2) JAMB 2023
4233

Which type of chemical combination involves the transfer of electrons from one atom to another, resulting in the formation of oppositely charged ions?

  • A. Ionic bonding
  • B. Hydrogen bonding
  • C. Covalent bonding
  • D. Metallic bonding
View Answer & Discuss (1) JAMB 2023
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
4234

Which of the following alkanes has a straight-chain structure?

  • A. Cyclopentane (C5H10)
  • B. Isobutane (C4H10)
  • C. 2 - methyl propane (C4H10)
  • D. Pentane (C5H12)
View Answer & Discuss (4) JAMB 2023
4235

What is the product of the electrolysis of aqueous sodium chloride (NaCl) using inert electrodes?

  • A. Hydrogen gas at the cathode and chlorine gas at the anode
  • B. Hydrogen gas at the cathode and oxygen gas at the anode
  • C. Sodium metal at the cathode and chlorine gas at the anode
  • D. Sodium metal at the cathode and oxygen gas at the anode
View Answer & Discuss (12) JAMB 2023
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC offline past questions - with all answers and explanations in one app - Download for free
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208