In a sewage-treatment plant, a large concrete tank initially contains 440 000 litres liquid and 10 000 kg fine suspended solids. To flush this material out of the tank, water is pumped into the vessel at a rate of 40 000 litres h^{- 1}. Liquid containing solids leaves at the same rate. Estimate the concentration of suspended solids in the tank at the end of 5 h._______________________.

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#Question id: 27521

#Section 5: Bioprocess Engineering and Process Biotechnology

In the figure below, '1', '2' and '3' stand for

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#Question id: 27558

#Section 5: Bioprocess Engineering and Process Biotechnology

10 kg of a pure enzyme (Mr 30 000) catalyses the conversion of 1.5 g of a substrate (Mr 44) to products in 5 minutes. What will be the turnover number in (sec^-1)  ....10^5

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#Question id: 27562

#Section 5: Bioprocess Engineering and Process Biotechnology

Match each parameter in Group 1 with the appropriate measuring device in Group 2

Group 1                                       Group 2

(P) Pressure                               (1) Photometer

(Q) Foam                                    (2) Rotameter

(R) Turbidity                               (3) Diaphragm gauge

S) Flow rate                                (4) Rubber sheathed electrode

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#Question id: 27563

#Section 5: Bioprocess Engineering and Process Biotechnology

Match the instruments in Group 1 with their corresponding measurements in Group 2

Group 1                                                         Group 2

(P) Manometer                                              (1) Agitator speed

(Q) Rotameter                                               (2) Pressure difference

(R) Tachometer                                              (3) Cell number

(S) Haemocytometer                                     (4) Air flow rate

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#Question id: 27589

#Section 5: Bioprocess Engineering and Process Biotechnology

The pressure gauge on an autoclave reads 15 psi. What is the absolute pressure in the chamber in psi? (Assume atmospheric pressure is 14.7 psi)

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#Question id: 27590

#Section 5: Bioprocess Engineering and Process Biotechnology

The pressure gauge on an autoclave reads 15 psi. What is the absolute pressure in the chamber in atm? (Assume atmospheric pressure is 14.7 psi and 1 psi=6.8*10-2 atm