Question

Explain why an milkman add very small amount of baking soda to fresh milk

Answer 1

Hi.... :)
here is your answer :

Milkman add very small amount of baking soda to fresh milk to turn the milk's ph value slightly alkaline.

By doing this milk unspoiled for more time...

Answer 2

By adding a very small amount of baking soda to fresh milk, the milkman keeps the milk unspoiled for little more time than usual time. As the pH value increases the milk turns to slightly alkaline, b) As baking soda is added, it turned into a base. But curd needs acidic condition to set.