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Explain the Ion Exchange water Softening
Softening is usually done using a resin (natural or synthetic long chain chemical with a sodium ion attached). When water containing hardness ions is passed through the resin, the hardness ions (Ca, Mg) exchange with Na ions on the resin (thus the resulting water is free of hardness ions but high in sodium).
When the sodium ions on the resin are exhausted, the resin is regenerated using a brine solution (which replaces all hardness ions attached to the resin with Na ions again) and the resin can be used again.
Define the Impact Damage - underwater inspection of bridge? Impact from moving vessels or logs carried during the floods can inflict damage to the structure. The impact or coll
the elevations of grid points for an area as follows: 1 2 3 4 5 6 7 8 F 690 709 726 732 735 740 743 747 E 696 715 729 736 740 737 739 740 D 702 723 733 742 737 737 745 747 C 707 72
Q. Paint system to protect steelwork from corrosion? In a typical painting system, there are generally three main layers primer, undercoat and finishing coat. Primer acts as th
Total station - uses and mining: Uses:- Total stations are mainly used by land surveyors and Civil Engineers, either to record features as in Topographic Surveying or to
Question During deep excavation , neighbouring ground water table is drawn down that might affect settlement of nearby buildings. What is remedial proposal to rectify situatio
Shrinkage of concrete in prestressed members The shrinkage of concrete in prestressed members results in a shortening of ensioned wires and hence contributes to the loss of st
Q. Show the Differences Between GGBS and PFA? The use of GGBS as substitute of cement improves smaller reliance on PFA. Particularly GGBS is supposed to be more compatible with
types of doors with there prices
How to the Slump test
Nonsymmetrical loading of the snow A decrease in snow weight in some parts of a roof because of the wind, or melting from the heath, or the sun light would reduce internal powe
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