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1926

Calculate the pH of 0.05 moldm\(^{-3}\) H\(_2\)SO\(_4\)

  • A. 1.30
  • B. 1.12
  • C. 1.00
  • D. 0.30
View Answer & Discuss (7) JAMB 2018
1927

The choice of method for extracting a metal from its ores depends on the

  • A. strength of the core
  • B. position of the metal in the electrochemical series
  • C. source of the core
  • D. position of the metal in the periodic table
View Answer & Discuss (3) JAMB 2018
1928

Which of the following produces relatively few ions in solution?

  • A. NaOH
  • B. Ca(OH)\(_2\)
  • C. KOH
  • D. AI(OH)\(_3\)
View Answer & Discuss (3) JAMB 2018
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1929

The figure above shows the electrolysis of molten sodium chloride. Z is the

  • A. anode where the Cl\(^-\) ions are oxidized
  • B. cathode where the Cl\(^-\) ions are reduced
  • C. anode where the Na\(^+\) ions are reduced
  • D. cathode where the Na\(^+\) ions are oxidized
View Answer & Discuss (6) JAMB 2018
1930

The knowledge of half-life can be used to

  • A. Create an element
  • B. Detect an element
  • C. to combine elements
  • D. Irradiate an element
View Answer & Discuss (10) JAMB 2018
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