7th Class Science Wastewater Story Question Bank Wastewater Story

  • question_answer 76) This kills the microbes that help to purify water

    A) Paints             

    B) Motor oil

    C) Medicines                   

    D) All of these

    Correct Answer: D

    Solution :

    All of these

adversite



LIMITED OFFER HURRY UP! OFFER AVAILABLE ON ALL MATERIAL TILL TODAY ONLY!

You need to login to perform this action.
You will be redirected in 3 sec spinner

Free
Videos