7th Class Science Wastewater Story Question Bank Wastewater Story

  • question_answer 42) DIRECTIONS: Match Column-I with column II and select the correct answer using the codes given below the columns.
    Column-I Column-II
    (A) Sewage (p) Suspended impurities present in sewage.
    (B) Contaminants (q) Phosphorus and Nitrogen
    (C) Nutrients present as suspended impurities in waste water, (r) Liquid waste which causes water and soil pollution
    (D) Inorganic impurities present in waste water (s) Phosphates and nitrates

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

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

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

    D) A\[\to \] (s); B\[\to \] (q); C\[\to \] (p); D\[\to \] (s)

    Correct Answer: C

    Solution :

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

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