Match the LIST-I with LIST-II:LIST-I (Waste water treatment process) LIST-II (Explanation) A. Ozonation I. Removal of excess iron and manganese B. Aeration II. Removal of large solids C. Flocullation III. Disinfection D. Screening IV. Very small particles are clustered together
Choose the correct answer from the options given below:सूची-I का सूची-II के साथ मिलान कीजिए:सूची-I (अपशिष्ट जल उपचार प्रक्रिया) सूची-II (विवरण) A. ओजोनीकरण I. लौह व मैंगनीज की अधिकता को हटाना B. वातन (Aeration) II. बड़े ठोस को हटाना C. ऊर्णन (Flocculation) III. विसंक्रमण D. स्क्रीनिंग IV. अत्यधिक लघु कणों का एक साथ गुच्छ बनना
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Correct answer: A. A-III, B-I, C-IV, D-II
Explanation
Ozone is a strong oxidant used for disinfection (A-III). Aeration oxidises dissolved iron and manganese so they can be filtered out (B-I). Flocculation makes very fine particles clump into larger flocs (C-IV). Screening physically removes large floating solids at the inlet (D-II). Hence A-III, B-I, C-IV, D-II.ओजोन प्रबल ऑक्सीकारक है जिसका प्रयोग विसंक्रमण के लिए होता है (A-III)। वातन घुले लौह व मैंगनीज का ऑक्सीकरण कर देता है जिससे उन्हें छाना जा सके (B-I)। ऊर्णन में अत्यंत सूक्ष्म कण जुड़कर बड़े गुच्छ (फ्लॉक) बनाते हैं (C-IV)। स्क्रीनिंग प्रवेश-द्वार पर बड़े तैरते ठोस भौतिक रूप से हटाती है (D-II)। अतः A-III, B-I, C-IV, D-II।More People, Development and Environment questions
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