Chemical Engineering Basics Rain drops falling through atmospheric air attain limited terminal velocity, because of Surface tension effects of water Viscous force exerted by air Upward thrust due to air Force of gravity Surface tension effects of water Viscous force exerted by air Upward thrust due to air Force of gravity ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Blast furnace slag is mainly molten Magnesium silicate Iron pyrite Calcium silicate Sand Magnesium silicate Iron pyrite Calcium silicate Sand ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Coke is added in the blast furnace to None of these Remove sulphur & phosphorus from molten metal Reduce & melt the iron ore Increase the fluidity of slag None of these Remove sulphur & phosphorus from molten metal Reduce & melt the iron ore Increase the fluidity of slag 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 3CaO . SiO₂ 5CaO . 3 Al2O₃ 3CaO . Al2O₃ 2CaO . SiO₂ 3CaO . SiO₂ 5CaO . 3 Al2O₃ 3CaO . Al2O₃ 2CaO . SiO₂ ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Which one is neutral in character ? N₂O₄ N₂O₅ N₂O₃ N₂O N₂O₄ N₂O₅ N₂O₃ N₂O 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 90000 J 30000 J 60000 J 240000 J 90000 J 30000 J 60000 J 240000 J ANSWER DOWNLOAD EXAMIANS APP
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