EASY
12th Maharashtra Board
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Removal of large pieces of floating debris, oily substances, etc., during sewage treatment, is called _____.
(a)primary treatment
(b)secondary treatment
(c)final treatment
(d)amplification

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Important Questions on Enhancement of Food Production
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12th Maharashtra Board
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12th Maharashtra Board
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12th Maharashtra Board
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12th Maharashtra Board
IMPORTANT

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12th Maharashtra Board
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