7th Class Science Wastewater Story Question Bank Wastewater Story

  • question_answer DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) Ozone is used to disinfect water (ii) Chlorine is used to disinfect water

    A) Statement (i) is correct while statement (ii) is incorrect.

    B) Statement (ii) is correct while statement (i) is incorrect.

    C) Both statements are correct.

    D) Both statements are incorrect.

    Correct Answer: C

    Solution :

    Both statements are correct.

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