what is the function of ro water purifier
Reverse osmosis Reverse osmosis (RO) is a water purification technology that uses a semipermeable membrane to remove ions, molecules and larger particles from drinking water. In reverse osmosis, an applied pressure is used to overcome osmotic pressure, a colligative property, that is driven by chemical potential differences of the solvent, a thermodynamic parameter. Reverse osmosis can remove many types of dissolved and suspended species from water, including bacteria, and is used in both industrial processes and the production of potable water. The result is that the solute is retained on the pressurized side of the membrane and the pure solvent is allowed to pass to the other side. To be "selective", this membrane should not allow large molecules or ions through the pores (holes), but should allow smaller components of the solution (such as solvent molecules) to pass freely.[1]
National Pledge (India) 1. Hindi भारत मेरा देश है। सब भारतवासी मेरे भाई-बहन है। मैं अपने देश से प्रेम करता/करती हूं। इसकी समृद्ध एवं विविध संस्कृति पर मुझे गर्व है। मैं सदा इसका सुयोग्य अधिकारी बनने का प्रयत्न करता/करती रहूँगा/रहूँगी। मैं अपने माता-पिता, शिक्षको एवं गुरुजनो का सम्मान करूँगा/करूँगी और प्रत्येक के साथ विनीत रहूँगा/रहूँगी। मैं अपने देश और देशवाशियों के प्रति सत्यनिष्ठा की प्रतिज्ञा करता/करती हूँ। इनके कल्याण एवं समृद्धि में ही मेरा सुख निहित है।
Economic nationalism While the coining of the term "
Biochemical oxygen demand BOD can be used as a gauge of the effectiveness of wastewater treatment plants. It is listed as a conventional pollutant in the U.S. Clean Water Act.[2]