The separation of colloidal particles (or purification of sol) from particles of molecular dimensionsis known as(A) photolysis (B) dialysis(C) pyrolysis (D) peptization

The separation of colloidal particles (or purification of sol) from particles of molecular dimensions is known as (A) photolysis (B) dialysis (C) pyrolysis (D) peptization.

To answer this question step by step:

Step 1: Understand the question The question is asking for the term that describes the separation of colloidal particles or purification of sol from particles of molecular dimensions.

Step 2: Analyze the options (A) photolysis: Photolysis refers to the decomposition or breakdown of a substance by light. It does not specifically relate to the separation of colloidal particles. (B) dialysis: Dialysis is a process that uses a semipermeable membrane to separate solutes from a solvent based on their size. This option seems relevant to the question. (C) pyrolysis: Pyrolysis is the decomposition of organic materials by heat. It does not specifically relate to the separation of colloidal particles. (D) peptization: Peptization is the process of converting a precipitate into a colloidal suspension by adding a dispersing agent. This option seems relevant to the question.

Step 3: Choose the correct option Based on the analysis, the correct option for the separation of colloidal particles or purification of sol from particles of molecular dimensions is (B) dialysis.

So, the answer is (B) dialysis.