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NEET 2012
Exam
NEET
Year
2012
Subject
Chemistry
Chapter
Surface Chemistry

NEET 2012 · Chemistry · Surface Chemistry

The protecting power of lyophilic colloidal sol is expressed in...

The protecting power of lyophilic colloidal sol is expressed in terms of

Options

  1. Acoagulation value
  2. Bgold number
  3. Ccritical micelle concentration
  4. Doxidation number

Correct answer

B. gold number

Step-by-step solution

Lyophobic sols are unstable, so they are stabilised by adding some lyophilic colloids which protect them from precipitation. Thus, lyophilic colloids are called protecting colloids. Their protecting power is expressed in terms of gold number. Note Lesser the gold number, higher is the protecting power.
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