Question

A milkman adds a very small amount of baking soda to fresh milk.
(a) Why does he shift the pH of the fresh milk from 6 to slightly alkaline?
(b) Why does this milk take a long time to set as curd?

Answer 1

Answer:

To prevent the spoilage of milk, the milkman adds a very small amount of baking soda to fresh milk. ... Thus, the slightly bitter taste of milk is due to addition of base (baking soda). (c) For curdling milk, an acidic medium is required. When small quantity of baking soda is added, the medium becomes slightly basic.