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Chemistry 2011 WAEC Past Questions

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26
Which of the following equimolar solutions has the highest conductivity?
  • A. CH3COOH(aq)
  • B. H2CO3(aq)
  • C. H 2SO 4(aq)
  • D. NaOH (aq)
View Answer & Discuss (1) WAEC 2011
27

The colour of phenolphthalein indicator in alkaline solution at the end-point of an acid-base titration is?

  • A. colourless
  • B. orange
  • C. pink
  • D. yellow
View Answer & Discuss (9) WAEC 2011
28
Which of the following statements about enthalpy of neutralization is correct? It
  • A. is constant for a strong acid and a strong base
  • B. cannot be determined using calorimeter
  • C. has a positive value
  • D. is higher for strong acid and a weak base
View Answer & Discuss WAEC 2011
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29
When NH 4CI was dissolved in water, the container was cold to touch. This implies that
  • A. the process is endothermic
  • B. the process is exothermic
  • C. NH4CI is highly soluble in water
  • D. NH 4CI forms a saturated solution
View Answer & Discuss (1) WAEC 2011
30
Which of the following metallic oxides is amphoteric?
  • A. AI2O3
  • B. Fe2O3
  • C. MgO
  • D. Na2O
View Answer & Discuss WAEC 2011
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