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 3CaO . SiO₂ 2CaO . SiO₂ 3CaO . Al2O₃ 5CaO . 3 Al2O₃ 3CaO . SiO₂ 2CaO . SiO₂ 3CaO . Al2O₃ 5CaO . 3 Al2O₃ ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Air refrigeration cycle is used in the air crafts, because of Its higher co-efficient of performance (COP) Its high heat transfer rate Its low unit weight per ton of refrigeration Low temperature encountered at high altitude Its higher co-efficient of performance (COP) Its high heat transfer rate Its low unit weight per ton of refrigeration Low temperature encountered at high altitude ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics In a casting, cold shut defect is caused by Melt-mould reactions Faulty gating system Low pounhg temperature Very low mould permeability Melt-mould reactions Faulty gating system Low pounhg temperature Very low mould permeability ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics In "Imperial Smelting Process" for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following : Jet of water at high pressure Rain of molten lead Blast of air Mixture of water and air Jet of water at high pressure Rain of molten lead Blast of air Mixture of water and air ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics __________ is the process used for setting up compressive stresses in the surface of a metal to improve its fatigue strength. Spinning Slugging Lancing Shot peening Spinning Slugging Lancing Shot peening 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 concentration of zinc sulphate solution Decreasing the surface area of the electrodes Increasing the surface area of the electrodes Increasing the concentration of copper sulphate solution Increasing the concentration of zinc sulphate solution Decreasing the surface area of the electrodes Increasing the surface area of the electrodes ANSWER DOWNLOAD EXAMIANS APP
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