12th Class Chemistry Sample Paper Chemistry Sample Test Paper-2

  • question_answer
      Which of the following is most effective in coagulation of sol?                                                                                                                                                 [1]

    Answer:

      Asis a negatively charged colloidal sol due to adsorption of on its surface. Thus, it is coagulated by positively charged cations (out of ). By Hardy-SchuIze rule, greater the charge on cation, greater the coagulating power for . Thusis most effective.  [1]                      


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