Chemical Engineering Basics In a casting, cold shut defect is caused by Very low mould permeability Melt-mould reactions Faulty gating system Low pounhg temperature Very low mould permeability Melt-mould reactions Faulty gating system Low pounhg temperature ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at __________ percent relative humidity. None of these 50 100 None of these 50 100 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of portland cement. The component of Portland cement which first hardens is 5CaO . 3 Al2O₃ 3CaO . SiO₂ 2CaO . SiO₂ 3CaO . Al2O₃ 5CaO . 3 Al2O₃ 3CaO . SiO₂ 2CaO . SiO₂ 3CaO . Al2O₃ ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics The emf of a Deniell cell Zn | Zn²⁺ || Cu²⁺ | Cu can be increased by Increasing the concentration of copper sulphate solution Increasing the surface area of the electrodes Decreasing the surface area of the electrodes Increasing the concentration of zinc sulphate solution Increasing the concentration of copper sulphate solution Increasing the surface area of the electrodes Decreasing the surface area of the electrodes Increasing the concentration of zinc sulphate solution ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics __________ is the hardest oxide and is hence used where high wear resistance at high temperature is required. Magnesia Alumina Zirconia Beryllia Magnesia Alumina Zirconia Beryllia ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are Molybdenun, tungsten & chromium Cobalt, zirconium & molybdenum Cobalt, chromium & tungsten Cobalt, chromium & nickel Molybdenun, tungsten & chromium Cobalt, zirconium & molybdenum Cobalt, chromium & tungsten Cobalt, chromium & nickel ANSWER DOWNLOAD EXAMIANS APP
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