Jamb Chemistry Past Questions For Year 2018
Question 51
Diamond is a bad conductor of electricity because its bonding electrons are used in
- A. crystal lattice formation
- B. covalent bond formation
- C. metallic bond formation
- D. coordinate bond formation
Question 52
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
Question 53
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
Question 54
Which of the following produces relatively few ions in solution?
- A. NaOH
- B. Ca(OH)\(_2\)
- C. KOH
- D. AI(OH)\(_3\)
Question 55
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
