The accumulation of nitrate that results from diminished nitrate reductase activity, this symptoms is caused by

#Question id: 18942

#Part-A Aptitude & General Biotechnology

#Question id: 10564

#Part-B Specialized Branches in Biotechnology

The term Ys , called the solute potential or the osmotic potential, represents the effect of dissolved solutes on water potential,

a) The mixing of solutes and water reduces the disorder of the system and thereby lowers free energy

b) Solutes reduce the free energy of water by diluting the water

c) The mixing of solutes and water increases the disorder of the system and thereby lowers free energy

d) Solutes increases the free energy of water by diluting the water

 Which one of the following statements are INCORRECT?

#Question id: 19452

#Part-A Aptitude & General Biotechnology

#Question id: 15401

#Part-B Specialized Branches in Biotechnology

If roots of the auxiliary equation of are real and equal,  the general solution of the differential equation is 

#Question id: 14268

#Part-B Specialized Branches in Biotechnology

An activated-sludge waste treatment system is required to reduce the amount of BOD₅ from 1000 mg/l to 20 mg/l at the exit. The sedimentation unit concentrates biomass by a factor of 3. Kinetic parameters are µ_m = 0.2 h-1 , K_s = 80 mg/l, k_d = 0.01 h-1 , and Y ^M _X/S = 0.5 g MLVSS/g BOD₅. The flow of waste water is 10000 l/h and the size of the treatment basin is 50,000 l. What is the value of the solids residence time?