The colloidal sol of cellulose nitrate in ethyl alcohol is called………….

Explanation

To solve the question regarding the colloidal sol of cellulose nitrate in ethyl alcohol, we can break it down into the following steps:

### Step 1: Identify the Components
- The question mentions "cellulose nitrate" and "ethyl alcohol."
- Cellulose nitrate is a type of polymer that can form colloidal solutions when dispersed in a suitable solvent.

**Hint:** Look for the components of the colloidal solution and their roles.

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