waecE-LEARNING
Physics Paper 2, May/June. 2011  
Questions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Main
General Comments
Weakness/Remedies
Strength











Question 4

State
  1. two applications of electrolysis in an industry;
  2. one application of electrolysis in a school laboratory.
_____________________________________________________________________________________________________
Observation

Majority of the candidates could list correctly applications of electrolysis in industries but failed to mention application in the laboratory.
Generally performance was average.
The expected answers are:

Uses of Electrolysis
  • In Industry
  • electroplating
  • extraction of (some) metals (e.g. aluminum)
  • production of (some) gasses (e.g. hydrogen)
  • purification of (some) metals (e.g. copper).
  • In school laboratory
  • calibration of  a ammeter
  • electrolysis of acidified water  
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