A : Starch and gelatin are loyophillic colloid.
R : They have strong interaction, with the dispersion medium

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, mark (1)
B. If both Assertion & Reason are true but reason is not the correct explanation of the assertion, then mark (2)
C. If Assertion is true statement but Reason is false, then mark (3)
D. If both Assertion and Resson are false statements , then mark (4)

Answer

To analyze the statement provided in the question, we need to evaluate both parts: A (the assertion) and R (the reason).

### Step 1: Understand the Assertion (A)
**Assertion (A)**: Starch and gelatin are lyophilic colloids.

- **Explanation**: Lyophilic colloids are those where there is a strong affinity between the dispersed phase (the solute) and the dispersion medium (the solvent). In the case of starch and gelatin, they are organic compounds that have a significant attraction to water (the dispersion medium), which allows them to easily dissolve and form stable colloidal solutions.

### Step 2: Understand the Reason (R)
**Reason (R)**: They have strong interaction with the dispersion medium.

- **Explanation**: The strong interaction mentioned refers to the favorable interactions (such as hydrogen bonding and van der Waals forces) between the starch or gelatin molecules and water. This strong interaction is what characterizes them as lyophilic colloids, as it allows them to remain dispersed in the medium without precipitating out.

### Step 3: Conclusion
Both the assertion (A) and the reason (R) are correct. Starch and gelatin are indeed lyophilic colloids due to their strong interactions with the dispersion medium (water).

### Final Answer
**Both A and R are correct, and R is the correct explanation of A.**

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