The isoelectric point is the $pH$ at which:

  • A
    Colloidal particles move towards electrodes with opposite charge during electrophoresis.
  • B
    Colloidal particles move towards electrodes with the same charge during electrophoresis.
  • C
    Colloidal particles do not move towards any electrode during electrophoresis.
  • D
    The $pH$ of the medium becomes $7.0$.

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