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A cook leaves warm milk with a spoon of curd overnight. The bacterium that sets the curd is:

ALactophenolate
BLactobacillus
CLactoglobulin
DLactoperoxide
Answer & Solution
Correct answer: B. Lactobacillus
1. It multiplies quickly in the warm milk. 2. It turns the milk thick and sour. 3. That bacterium is Lactobacillus. _Source: syllabus Science Class VIII, Chapter 2, Microorganisms: Friend and Foe._
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