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Though tin occurs lower than iron in the electrochemical series, yet it is coated on steel for corrosion protection, because of its

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Pure aniline is evaporating through a stagnant air film of 1 mm thickness at 300 K and a total pressure of 100 KPa. The vapor pressure of aniline at 300 K is 0.1 KPa. The total molar concentration under these conditions is 40.1 mole/m 3 . The diffusivity of aniline in air is 0.74 × 10 -5 m 2 /s. The numerical value of mass transfer co-efficient is 7.4 × 10 -3 . Its units are In a bag filter, the pressure drop increases directly as the Coke oven gas after passing through return electrostatic tar precipitator (RETP) is used for the The safe height (h) to diameter (d) ratio (i.e., h/d) for liquid/petro fuel storage tank of capacity more than 45 kilolitres is less than Drying of refractory is normally carried out in a __________ dryer.