Question

a milk man adds a very small amount of baking soda to fresh milk why does she shift the pH of the fresh milk from 6 to slightly alkaline ​

Answer 1

This is done because milk, when fresh doses not sustain for long time and can not be consumed. So to make the milk sustain for a long time baking soda is added.

Answer 2

HI

During summer season, a milkman usually adds a very small amount of baking soda to fresh milk. This is done to preserve milk, avoid fermentation and to increase the pH from 6 to slightly alkaline. Thus, this milk takes a long time to set as curd, which needs an acidic condition to set.

Hope it proved to be beneficial...