Answer / nilkanth patni

operation at which only physical changes occurs isknown as
the unit operation.
eg, distillation, drying, filtration etc....

Answer / guest

NO CHEMICAL REACTION INVOLVED

Answer / priyank sompura

distilation , drying ,absorption etc.................... are
unit operation

Answer / faiz khan

Suppose we are synthesizing aspirin in the lab then there are a number of operation we have to perform like mixing, heating, evaporating the solvent or filtering the solid and then drying to get the final product (aspirin). This is a unit process(synthesis of aspirin) in which a number of unit operations are involved.

Answer / manish

Drying,crystallisation,extration,and many heat transfer cofficient all process in unit operation
No chemical reaction involved in process

Answer / hm

Unit operation is part of chemical process industries to raw material convert in product only involves physical changes.
Ex. Mass transfer , crystallisation , fluid flow operation , mass operation , gas absorption etc

Answer / sharief

mixersettlers,distillation coloumns,driers,......

Answer / vibha porwal

unit operation is just like telling us about the procedure
for any equipment to operate.

how can I find out a sulfuric acid recovery plant disigner?

0 Answers   ONGC,

What is the method involved in analyzing powders for composition?

0 Answers  

Explain what are some good uses of low-grade steam at 12 atm and 1920c?

0 Answers  

Why is respiration considered as an exothermic reaction? Explain?

0 Answers  

Question 90 - In the calculation of the growth of bacteria, absorbance, A in spectrophotometry is used. According to Beer-Lambert Law, A = e x l x c where A is the absorbance of the solution (no unit), l is the distance of light travels through the solution (in cm), e is the molar absorptivity or the molar extinction coefficient [ in L / (mol.cm) ]. For a particular solute and fixed path length : As / Ao = Cs / Co where Ao is the observed signal for a known concentration Co, and As is the observed signal for a sample concentration Cs. (a) For a cell concentration of 560 cells / mL, a spectrophotometre gives an absorbance reading of 1.0. A mixture of concentration 3600000 cells / mL can be diluted in several operations, with each operation having a dilution of 1:20. How many dilutions should be made so that the concentration of this mixture can be calculated within a range of A = 0.0 to 1.0. (b) In another experiment, a sample tube of 1 cm in width is used. Let A = 0.06 and e = 0.0012 ml / (cell.cm). Find the cell concentration of the sample.

1 Answers  

Question 105 - In a rigid rotor model in quantum chemistry, the moment of inertia I is given by an Equation E as I = Ma x La x La + Mc x Lc x Lc = m x L x L, where m = (Ma x Mc) / (Ma + Mc) and L = La + Lc, m is the reduced mass, Ma is the mass of a, Mc is the mass of c, La is the radius of a from point O, Lc is the radius of c from point O. Prove by simplest method that Equation E is wrong.

1 Answers  

what is mass flow rate of steam of 7 kg/cm2 pressure in 1 inch id. pipe.

0 Answers   Ascent,

which is more effective , a single extraction with a large volume of solvent or several small volume extractions? Explain.

2 Answers  

Explain the different ways in which solids can be blended?

0 Answers  

HOw to derive reynolds equation?

1 Answers  

BIOCHEMICAL ENGINEERING INSTRUMENTATION - EXAMPLE 29.2 : (a) In order to determine the slurry volume (L) in chromatography, arrange the formula using the following parameters : slurry concentration (%), slurry volume (L), settled chromatography medium volume (L), 100. (b) In order to determine the chromatography medium volume (L) in gel filtration chromatography, arrange the formula using the following parameters : sample volume to be processed (L), chromatography medium volume (L), sample volume in percent of total column volume (%), 100.

1 Answers  

What do we use carburizing/nitriding chemicals for?

0 Answers   Ashok Leyland,