A milkman adds a very small amount of baking soda to fresh milk.

  1. A milkman adds a very small amount of baking soda to fresh milk.
  2. Why does this milk take a long time to set as curd ?


Answer :

  1. Baking soda is added to Fresh Milk so that it is made slightly alkaline so that it may not get sour easily due to the formation of lactic acid in it.The more acidic the more sourness. Basically baking soda is added to milk to control the sourness of the curd.
  2. The fresh milk has to turn acidic to become curd. But when baking soda is added to the milk it turns into alkaline.The alkaline milk takes a longer time to set into curd because the lactic acid being formed has to first neutralise the alkali present in it.

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