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A bacteria gives birth to two new bacteria in each second and the life span of each bacteria is 5 seconds. The process of the reproduction is continuous until the death of the bacteria. initially there is one newly born bacteria at time t = 0, the find the total number of live bacteria just after 10 seconds :
In a batch process, the reaction takes place in the presence of an acid medium. The acid is drained from the reaction vessel at the rate of 15ml/s as a result of the density difference of the acid from the reacting component. To avoid wastage of acid, it is recycled to an acid tank which has 1000 L capacity. The acid drained from the reaction vessel, picks up 50 g/L solids from the reactor. Acid is fed once again to the process from acid tank. When the process is started, the acid is almost pure in the tank as a result of filtration. As the reaction proceeds, acid in the tank gets more and more contaminated with the solids. The concentration of the solids should not exceed 100 g/L from the process point of view. The batch time is 16h. Estimate whether the concentration of the solids will exceed 100g/L during the batch reaction.
Consider the following in case of high-energy forming processes: 1. The evacuation between die and blank in explosive forming is done by a vacuum pump. 2. The pressure waves produced in water in explosive forming deform the blank to the die shape. 3. The electrohydraulic forming makes use of discharge of large amount of electrical energy used in a capacitor bank. 4. In Petroforge, the piston is moved by combustion of fuel moving at the rate of 150-200 m/s. Which of the above are correct?
Match the name of the acid given in column I with the corresponding food items in which they are found given in column II.   Column - I   Column - II (a) Acetic acid (i) Spinach (b) Lactic acid (ii) Lemons (c) Oxalic acid (iii) Curd (d) Citric acid (iv) Vinegar
What type of enzyme catalyzes the conversion of d-lactic acid to l-lactic acid?
Calculate the pKa of lactic acid, given that when the concentration of lactic acid is 0.010M and the concentration of lactate is 0.087M, the pH is 4.80.
Match List-I with List-II and select the correct answer by using the codes given below the list:   List – I (Name of acid)    List – II (Source)  (a)  Lactic acid (i) Apple  (b) Oxalic acid (ii) Curd  (c) Ascorbic acid (iii) Spinach  (d) Malic acid (iv) Indian Gooseberry (Amla)
Essentially in an experiment involving bacteria, we measure Optical density of the media where the bacteria grow at different time point from the same flask. If we have 2 or more types of bacteria and want to investigate whether the growth curve of those bacteria are significantly different, what do you think the best analysis can be applied for this purpose?
A continuous process is set up for treatment of wastewater. Each day, 103 kg cellulose and 105 kg bacteria enter in the feed stream, while 102 kg cellulose and 1.5 x 102 kg bacteria leave in the effluent. The rate of cellulose digestion by the bacteria is 8 x 102 kg d-1. The rate of bacterial growth is 4x 102 kg d-l; the rate of cell death by lysis is 6 x 102 kg d-1. Write balances for cellulose and bacteria in the system.
Which among the following pairs are incorrectly matched? Acetic acid - Spinach Oxalic acid - Vinegar Lactic acid - Ant's sting Tartaric acid - Grapes