Question

When a small quantity of baking soda is added to fresh milk it's ph shifts from 6 to slightly alkaline side. Now answer the following questions

1. Why the ph of the milk should be changed to alkaline side?

2. What will be observed when the milk is heated and it begins to boil?

3. Why does milk take more time to change into curd? ​

Answer 1

Answer:

a) 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)On boiling, milk will become slightly bitter in taste due to the presence of baking soda

c) As baking soda is added, it turned into a base. But curd needs acidic condition to set. Hence this milk takes a long time to set as a curd.

Explanation:

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