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4306

How many moles are there in 3.0 g of \(O_2\)? [O = 16.0]

  • A. 0.0093 moles.
  • B. 0.0930 moles.
  • C. 0.0625 moles.
  • D. 0.6250 moles.
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4307

Which of the following equimolar solutions has the highest conductivity?

  • A. \(H_2SO{_4(aq)}\)
  • B. \(NaOH{_(aq)}\)
  • C. \(H_2CO{_3(aq)}\)
  • D. \(CH_3COOH{_4(aq)}\)
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4308

The pair of compounds that belongs to the same homologous series is

  • A. \(C_2H_6\) and \(C_4H_{10}\)
  • B. \(C_3H_8\) and \(C_3H_6\)
  • C. \(C_2H_4\) and \(C_4H_{10}\)
  • D. \(C_4H_{10}\) and \(C_5H_{10}\)
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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4309

Which of the following equations does not illustrate correctly one of the reactions of chlorine?

  • A. \(Ca(OH)_2 + Cl_2 → CaOCl_2 + H_2O\)
  • B. \(Cl_2 + 2NaF → 2NaCl + F_2\)
  • C. \(Cl_2 + 2NaOH → NaCl + NaClO + H_2O\)
  • D. \(H_2S + Cl_2 → 2HCl + S\)
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4310

The salt solution formed firm a reaction between ethanoic acid and sodium hydroxide solution would be

  • A. amphoteric.
  • B. neutral
  • C. basic
  • D. acidic
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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
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208