जल उपचार में पराबैंगनी किर – McqOptions

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1.	जल उपचार में पराबैंगनी किरणों का प्रयोग किस रुप में किया जा सकता है -
A.	ऊर्णीकारक
B.	जल अपघटक
C.	रोगाणुनाशक
D.	अवक्षेपक
Answer» D. अवक्षेपक

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