Question

why does this milk take a long time to set as curd

Answer 1

because we add baking soda to the milk

Answer 2

The milk take a long time to set as curd because the enzyme which coverts milk into curd is active only in acidic condition. So acid produced during curd formation first neutralises the base present in the milk. Therefore milk take long time to set as curd.

Hope it will help u..