Answer / shirish

reynold's number= inertial force/viscous force
= DV/u/p
=DVp/u
where D=diameter of pipe
V= velocity of water
p=density of water
u=viscosity
reynolds number derive by keeping vertical glass tube. The
tank filled with ink add in glass tube throught nozzle.
calculate flow rate.
if q<1000 laminar flow
1000<q<4000 transition region
q> 4000 turbulent.

What is the basic difference between dispersion & distribution in any polymer blend or alloy??

0 Answers  

---

Why is respiration considered as an exothermic reaction? Explain?

0 Answers  

---

Three solid objects of the same material and of equal mass – a sphere, a cylinder (length = diameter) and a cube – are at 5000C initially. These are dropped in a quenching bath containing a large volume of cooling oil each attaining the bath temperature eventually. The time required for 90% change of temperature is smallest for a) cube b) cylinder c) sphere d) equal for all the three whyyyyyyy???????

3 Answers   GATE,

---

How to caliculate the boil up rate, dia and height in both packed and tray distillation columns and any referance books for the design.

0 Answers  

---

Why is double the amount of gas collected in one of the test tubes in electrolysis of water than th amount collected in the other? Name this gas?

0 Answers  

---

Question 92 - (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  

---

Explain the functioning of a three-way catalytic converter.

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  

---

I am writing the chemical engineering subject test for Reliance India Limited. Could someone who has taken the test please list some of the questions from that paper?

2 Answers  

---

Question 108 - (a) The correct statement about both the average value of position (<x>) and momentum (<p>) of a 1-dimensional harmonic oscillator wavefunction is <x> = <p> = 1 - x. Find the value of x. (b) The probabilities of finding a particle around points A, B and C in the wavefunction y = f(x) are P(A), P(B) and P(C) respectively. Coordinates are A (3,5), B (4,-10) and C (6,7). Arrange P(A), P(B) and P(C) in term of a < b < c, when | y-coordinate | signifies the probability.

1 Answers  

---

What is maximum recommend pipe velocity for dry and wet gases?

0 Answers  

---

hello everyone do anyone have interview questions for any chemical industry please email me at

0 Answers   ONGC,

---