Step 1: Understanding the Concept:
Curd acidity is an important quality parameter.
Sweet and sour curd have different acidity levels.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the acidity standards for curd.
Step 3: Detailed Explanation:
Sweet curd acidity: Not more than 1.5\%.
Sour curd acidity: Up to 2.0\%.
Other options have incorrect values.
Thus, the correct values are not more than 1.5 and up to 2.0\%.
Step 4: Final Answer:
Sweet curd: not more than 1.5\%, sour curd: up to 2.0\%.
Hence, the correct option is (B).
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