Question:
Refractive Index (RI) is directly related to the soluble constituents in a medium and milk has a RI of about:
Refractive Index (RI) is directly related to the soluble constituents in a medium and milk has a RI of about:
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Refractive Index of milk: ~1.35.
Used to measure soluble solids.
Higher RI indicates higher solids content.
Used to measure soluble solids.
Higher RI indicates higher solids content.
Updated On: Aug 18, 2026
- 2.05
- 1.75
- 1.35
- 1.10
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Refractive index is a measure of soluble solids.
Milk has a specific RI value.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the RI of milk.
Step 3: Detailed Explanation:
The refractive index of milk is about 1.35.
It is measured using a refractometer.
Water has an RI of about 1.33.
Other options are too high.
Thus, the correct RI is 1.35.
Step 4: Final Answer:
Milk has a refractive index of about 1.35.
Hence, the correct option is (C).
Refractive index is a measure of soluble solids.
Milk has a specific RI value.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the RI of milk.
Step 3: Detailed Explanation:
The refractive index of milk is about 1.35.
It is measured using a refractometer.
Water has an RI of about 1.33.
Other options are too high.
Thus, the correct RI is 1.35.
Step 4: Final Answer:
Milk has a refractive index of about 1.35.
Hence, the correct option is (C).
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