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GATE Civil Engineering (CE) 2019 Shift 2 Solved Paper

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Question : 43

Total: 65

Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in the influent and effluent are C0 and C, flow rate through the reactor is Qm3/h respectively. The compound is degraded in the reactor following the first order reactions. The mixing condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR). The length of the reactor can be adjusted in these two mixing conditions to L CMFR and LPER while keeping the cross-section of the reactor constant. Assuming steady state and for C/C0=0.8, the value of LCMFR/LPER (round off to 2 decimal places) is ___________

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