Formation of curd from milk is what type of change?
Answer and explanation
Correct answer: Chemical change
Bacteria convert lactose in milk into lactic acid. This coagulates milk proteins and forms curd, which has properties different from those of milk. Curd cannot be converted back into milk by simple physical methods. Therefore, this is a chemical change; in a physical change, no new substance is formed.
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What is the correct answer to this question?
Chemical change
Why is this the correct answer?
Bacteria convert lactose in milk into lactic acid. This coagulates milk proteins and forms curd, which has properties different from those of milk. Curd cannot be converted back into milk by simple physical methods. Therefore, this is a chemical change; in a physical change, no new substance is formed.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
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