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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.
State the effect of the induction of the pre-stresses The net effect of the induction of the pre-stresses shall be to decrease the tensile stresses (produced due to the exte
Explain Flocculation Most important factor effecting particle removal efficiency objective - to bring particles into contact so that they will collide, stick together
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Widening on Curves: Pavements have to be widened on curves because of the fact that : (a) the vehicle has a wheel base and overhang on the front and rear, and the vehicle
LIME It is significant binding material utilized in building construction. Lime has been utilized as the material of construction from ancient time. While it is mixed with san
Define the Hazard Ranking system (HRS) - A procedure for ranking uncontrolled hazardous waste sites in terms of the potential threat based upon the containment of the route of
How to do deflection calculations Basic values of span to effective depth ratios for spans upto 10m may be taken as 7, 20 and 26 for cantilever, simply supported and continuous
What is WBM road. How it is constructed?
Joints in box culverts and channels - necessity of water tightness The joints for box culverts and channels must be capable of accommodating movements arising from moisture an
Explain the Bolted Connections a) Questions generally relate to the size of the bolt needed for a connection or b) Number of bolts for a given loading and specified size
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