Which of the following statements is correct with respect to colloidal state and surface phenomenon.

  1. A

    Gold sol can be coagulated by SO42-ion

  2. B

    Sb2S3 sol can be coagulated by adding Fe(OH)3 sol.

  3. C

    Adsorption processes are entropy driven process always.

  4. D

    At very high pressures, adsorption increases with pressure.

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    Solution:

    • Sb2S3 is the negatively charged sol.
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