1.A wastewater sample contains 10-5.6 mmol/l of OH ions at 25° C. The pH of this sample i 2. At a rated capacity of 44 Cumecs, a centrifugal pump develops 36 m of head when operating at 1450 rpm. Its specific speed is : 3. If the pump head is 75 m, discharge is 0.464 …
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