ಮೊಸರು ಮುಖ್ಯವಾಗಿ ____ ಆಮ್ಲವನ್ನು ಹೊಂದಿರುತ್ತದೆ.

Curd contains mainly lactic acid, produced when Lactobacillus bacteria ferment the lactose in milk. The acid makes curd sour and thickens it.