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Chemistry Past Questions

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
2011
If an element R belongs to the same group as sodium, an aqueous solution of ROH will
  • A. be neutral
  • B. be acidic
  • C. be coloured
  • D. have pH greater than 7
  • E. turn back litmus red
View Answer & Discuss WAEC 1997
2012
Element X, with electronic configuration 2, 8, 2 and element Y with electronic configuration 2, 8, 7 are like to combine by
  • A. metallic bonding
  • B. covalent bonding
  • C. electrovalent bonding
  • D. dative bonding
  • E. hydrogen bonding
View Answer & Discuss (1) WAEC 1997
2013
The valence electrons of element 12Mg are in the
  • A. 1s orbital
  • B. 2s orbital
  • C. 2px orbital
  • D. 2py orbital
  • E. 3s orbital
View Answer & Discuss (2) WAEC 1997
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2014

Which of the following statements is correct about sodium chloride in the solid state?

  • A. it exists as aggregates of ions
  • B. it conducts electricity
  • C. its melting point is below 100oC
  • D. it exists as discrete molecules
  • E. its ions are linked by metallic bonds
View Answer & Discuss (5) WAEC 1997
2015
Which of the following Group 1 elements has the highest ionization energy?
  • A. 55Cs
  • B. 37Rb
  • C. 19K
  • D. 11Na
  • E. 3Li
View Answer & Discuss (5) WAEC 1997
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