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प्रश्न
Which of the following is TRUE about primary treatment?
पर्याय
It is a physical process.
It is a biological process.
It involves removal of large pieces of floating debris, oily substance through filtration.
Both It is a physical process and It involves removal of large pieces of floating debris, oily substance through filtration.
MCQ
उत्तर
Both It is a physical process and It involves removal of large pieces of floating debris, oily substance through filtration.
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या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
