everyday science MCQ #2313

Why does milk curdle?

everyday science MCQ #2313

  1. Question 1

    Q1. Why does milk curdle?

    • A) Fermentation of lactose
    • B) Reaction of microbes
    • C) Overheating
    • D) Fungus growth

    Answer: Fermentation of lactose

    Explanation: Bacteria ferment lactose in milk into lactic acid, which lowers pH and causes casein proteins to denature and coagulate, forming curds.