Question

Specific gravity of milk at 60ºC

 a) 0.1

 b) 0.5

 c) 0.6

 d) 0.9

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Answer 1

Answer:0.9

Explanation:

The specific gravity of milk measured at 15oC or 20oC is normally 1.028 - 1,033 kg/litre. The specific gravity depends on the protein and fat content. The specific gravity of fat is 0.93, solids-non-fat, 1.6 and water 1.0 kg/litre.

If the milk is mixed with air, by pumping for example, the specific gravity will be lower. The specific gravity of the milk collected by a tanker is usually between 1.015 and 1.020 kg/litre. If the specific gravity is lower than 1.01 kg/litre, this may indicate extraneous water (water content higher that normal).

Answer 2

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0.9