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Question
Which of the following is an example of a chemical change?
Which of the following is an example of a chemical change?
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Solution
The correct option is A Formation of curd from milk
Chemical changes involve change in the chemical composition of the original substance resulting into the formation of a new substance.
Among the given options formation of curd from milk is a chemical change, as the enzymes secreted by the bacteria converts milk into a new substance called curd.
The dissolution of sugar in water, cutting of paper and melting of ice are examples of a physical change as there is no change in the chemical composition of these substances.
Chemical changes involve change in the chemical composition of the original substance resulting into the formation of a new substance.
Among the given options formation of curd from milk is a chemical change, as the enzymes secreted by the bacteria converts milk into a new substance called curd.
The dissolution of sugar in water, cutting of paper and melting of ice are examples of a physical change as there is no change in the chemical composition of these substances.
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