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Curd is sour due to presence of

  • A.Citric acid
  • B.Lactic acid
  • C.Acetic acid
  • D.None of these

Answer: B

Curd is sour because of lactic acid.

Lactobacillus ferments the milk sugar lactose into lactic acid, which lowers the pH and coagulates the milk protein casein - so the same acid both sours the milk and sets it.

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