Select the correct statement?

Options

A. Milk is an emulsion of water in fat
B. Clay may be peptised by alkalis, the OH- being the active agent
C. Both (1) and (2)
D. None of these

Answer

To solve the question, we need to evaluate the given statements one by one to determine which, if any, are correct.

### Step 1: Analyze the first statement
**Statement 1:** "Milk is an emulsion of water in fat."

- **Explanation:** Milk is a colloidal solution that consists of fat globules dispersed in water. This means that the fat is the dispersed phase and water is the dispersion medium. Therefore, milk is classified as an oil-in-water emulsion, not water-in-fat. This statement is incorrect.

### Step 2: Analyze the second statement
**Statement 2:** "K may be peptized by alkalis, OH- being the active agent."

- **Explanation:** Peptization refers to the process of converting a precipitate into a colloidal solution. For clay particles, which are negatively charged, they can be peptized by positively charged ions, not negatively charged ions like OH-. Since OH- is a negatively charged ion, it cannot effectively peptize negatively charged clay particles. Thus, this statement is also incorrect.

### Step 3: Evaluate the combined statement
**Statement 3:** "Both 1 and 2."

- **Explanation:** Since both individual statements are incorrect, this combined statement is also incorrect.

### Step 4: Conclusion
**Final Evaluation:** Since all the provided statements (1, 2, and 3) are incorrect, the correct answer is option 4: "None of these."

### Final Answer:
The correct answer is option 4: None of the given statements are correct.

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