7th Class Science Wastewater Story Question Bank Wastewater Story

  • question_answer DIRECTIONS: Match column I with column Ii and select the correct answers using the code given below the columns.
    Column-I Column-II
    (A) Aeration (p) Chlorien tablets are added  
    (B) Chlorination (q) Passes through layer of sand
    (C) Filtration (r) Air is bubbled

    A) (A) \[\to \] (q),(B) \[\to \] (p),(C) \[\to \] (r)

    B) (A) \[\to \] (p),(B) \[\to \] (q),(C) \[\to \] (r)

    C) (A) \[\to \] (r),(B) \[\to \] (q),(C) \[\to \] (p)

    D) (A) \[\to \] (r),(B) \[\to \] (p),(C) \[\to \] (q)

    Correct Answer: D

    Solution :

    (A) \[\to \] (r),(B) \[\to \] (p),(C) \[\to \] (q)


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