7th Class Science Physical and Chemical Changes Question Bank Physical and Chemical Changes

  • question_answer
    Adding salt to water makes it salty. Which of the following statement is true regarding this change?

    A) It is a chemical change because a new substance is formed

    B) It is a physical change because the original substances can be recovered

    C) It is a chemical change because there is exchange of heat

    D) It is a physical change because there is a slight change in colour.

    Correct Answer: B

    Solution :

    Salt can be recovered from solution by evaporation.


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