Chemical Reaction Engineering
'Unreacted core model' represents the reaction involving

None of these
Roasting of sulphide ores
Manufacture of carbon disulphide from elements
Combustion of coal particles

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Chemical Reaction Engineering
In an ideal mixed reactor (at steady state), the

Space time is equivalent to holding time for constant density systems
Composition throughout the reactor remains same
All of these
Exit stream has the same composition as the fluid within the reactor

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Chemical Reaction Engineering
A CSTR is to be designed in which an exothermic liquid phase first order reaction of the type, A → R, is taking place. The reactor is to be provided with a jacket in which coolant is flowing. Following data is given: CA0= 5 kmole/m³ ; XA = 0.5; Feed temperature = reactor temperature = 40°C. Rate constant at 40°C = 1 min⁻¹ ; (ΔH) = - 40kJ/mole; ρ = 1000kg/m³ CP = 4 J/gm.°C ; q = 10⁻³ m³/min (ρ and CP are same for the reactant and product streams). The amount of heat to be removed is

1kW
2/3 kW
4kW
5/3 kW

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