Topics:
Animal Refresher, Dairy Science
Instrument to Measure Milk Fat
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Question (English)
The fat content of milk is calculated by:
- Gerber's Butyrometer ✓ Correct
- Lactometer
- Pycnometer
- Hortvet apparatus
Explanation:
Correct Answer: Gerber's Butyrometer
Gerber's Butyrometer is used to measure the fat content of milk. It is the best and most widely used method for fat estimation (Gerber method).
Other Methods for Fat Estimation
- Soxhlet apparatus: used for accurate fat extraction in laboratory; solvent extraction method.
- Rose-Gottlieb method: another laboratory reference method for fat determination.
Other Instruments and Their Uses
- Quevenne Lactometer: measures specific gravity of milk (at 15.6°C).
- Hydrometer / Pycnometer: measures density of milk (at 20°C).
- Hortvet Cryoscope: measures freezing point of milk.
- Zeiss Refractometer: measures refractive index of milk (at 20°C).
Why Other Options Are Wrong
- Lactometer → measures specific gravity, not fat %.
- Pycnometer → measures density, not fat %.
- Hortvet apparatus → measures freezing point of milk, not fat %.
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This multiple choice question is from Animal Refresher, Dairy Science. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Refresher to strengthen your preparation.