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GATE BT 2017 | Question: 22

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A $5$ liter chemostat is fed fresh medium at $0.2$ liters/minute having a substrate concentration of $25$ grams/liter. At steady state, the outgoing stream has substrate concentration of $2.5$ grams/liter. The rate of consumption (grams/liter/minute) of the substrate in the reactor is __________

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