A pack of cards contains 4 aces, 4 queens and 4 jacks. Two cards are drawn at random. The probability that at least one of them is an ace is

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#Question id: 31857

#Unit 12. Biochemical Engineering

Bacillus polymyxa strain was cultivated under anaerobic condition in a media containing 10 g/L glucose as the sole carbon source. The glucose was completely utilized in 10 h producing 2, 3-Butanediol with productivity of 5 g/L/h. What is the yield of 2, 3- Butanediol produced per gram of glucose consumed (g/g)? 

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#Question id: 31858

#Unit 12. Biochemical Engineering

If the partitioning coefficient (K) of a solute is 20 when it is extracted by an organic solvent from culture medium, what is the amount of solvent required per litre of culture medium to extract 90% of the solute in a single equilibrium stage? 

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#Question id: 31890

#Unit 12. Biochemical Engineering

The efficiency of an organic sludge composting method can be improved by various physicochemical options. Which one of the following is NOT a recommended option for the same?

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#Question id: 26661

#Unit 12. Biochemical Engineering

A mechanically agitated bioreactor for an aerobic microbial process can be scaled up from pilot plant data to commercial plant on the basis of

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#Question id: 26678

#Unit 12. Biochemical Engineering

The shear stress responsible for cell death in airlift fermentors CANNOT be reduced by

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#Question id: 26684

#Unit 12. Biochemical Engineering

1000 dm³ of fermentation medium containing 1x10+ Bacillus thuringenesis cells per cm3 is sterilized to achieve probability of contamination of 1 in 1000. Calculate the Del factor