Computer · Environmental Engineering
निम्नलिखित में से कौन से जोड़े सही ढंग से सुमेलित हैं? 1. चूना-सोडा प्रक्रिया (Lime-soda process) ↔ मृदुकरण (Softening) 2. नलगोंडा तकनीक (Nalgonda technique) ↔ फ्लोराइड निष्कासन 3. वातन (Aeration) ↔ स्कंदन (Coagulation) 4. ओजोनीकरण (Ozonation) ↔ कीटाणुशोधन (Disinfection)
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1, 2 और 4
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