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Lecture 7 Dosage 1

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  • 1. Multiple Choice
    45 seconds
    1 pt

    Colloidal particles are subjected to random collision with molecules of the dispersion medium (solvent) so each particle move in irregular and complicated zigzag pathway. This is known as:

    Osmotic pressure

    Brownian motion

    Diffusion

    None of the above

  • 2. Multiple Choice
    30 seconds
    1 pt

    .....is a name for the behaviour of charged particles near a semi-permeable

    membrane that sometimes fail to distribute evenly across the two sides of the membrane.

    Brownian motion

    Donnan membrane effect

    Electrophoresis

    Diffusion

  • 3. Multiple Choice
    30 seconds
    1 pt

    An amino acid will charry a ... charge when placed in an acidic medium

    Positive

    Negative

    Both positive and negative

    No charge

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