Chemical Engineering Basics Coke is added in the blast furnace to Increase the fluidity of slag Reduce & melt the iron ore None of these Remove sulphur & phosphorus from molten metal Increase the fluidity of slag Reduce & melt the iron ore None of these Remove sulphur & phosphorus from molten metal ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics What is the effect on the performance of the economiser in the thermal power plant boiler, if the feed water temperature is very low due to preheaters being out for repairs or starving of steam supply ? Economiser tube life increases due to handling of low temperature water It results in corrosion due to the condensation on the flue gas side of the economiser tubes due to handling of low temperature water Scale formation rate on economiser tubes increases Heat transfer efficiency of economiser increases due to picking up high heat from the flue gases Economiser tube life increases due to handling of low temperature water It results in corrosion due to the condensation on the flue gas side of the economiser tubes due to handling of low temperature water Scale formation rate on economiser tubes increases Heat transfer efficiency of economiser increases due to picking up high heat from the flue gases ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics For the irreversible reaction, Ca+ 2C = Ca C₂ , Δ H°298 = - 60000 J . mole⁻¹ . If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be 240000 J 60000 J 90000 J 30000 J 240000 J 60000 J 90000 J 30000 J ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Stretcher strains found in a low carbon sheet are associated with the Dislocation density Texture Yield point phenomenon Thickness of the sheet Dislocation density Texture Yield point phenomenon Thickness of the sheet ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics __________ is the hardest oxide and is hence used where high wear resistance at high temperature is required. Alumina Zirconia Beryllia Magnesia Alumina Zirconia Beryllia Magnesia ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics If a heat transfer surface is pock-marked with a number of cavities, then as compared to a smooth surface the heat transfer by __________ will not increase. Radiation Conduction Nucleate boiling Convection Radiation Conduction Nucleate boiling Convection ANSWER DOWNLOAD EXAMIANS APP
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