Answer / chinna

om p Gupta(because I faced nfcl &,
hmel interview , now I employ in
hmel.

Answer / k.maheshkumar

o.p.gupta

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

0 Answers  

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What happens when fuel is burned , what are compounds released??

3 Answers   Reddy Labs,

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How much maximum power can be generated by 320v, 10kg-cm synchronous motor if shaft is rotated mechanically at 50 to 60 rpm?

0 Answers  

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What factors should be compared when evaluating cooling tower bids?

2 Answers  

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What is some good advice for specifying allowable pressure drops in shell and tube exchangers for heavy hydrocarbons?

0 Answers  

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how to calculate material balnce & energy balnce

7 Answers   MahaGenco, Oil India, ONGC,

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A distillation column separates 10000 kg / hr of a mixture containing equal mass of benzene and toluene. The product D recovered from the condenser at the top of the column contains 95 % benzene, and the bottom W from the column contains 96 % toluene. The vapor V entering the condenser from the top of the column is 8000 kg / hr. A portion of the product from the condenser is returned to the column as reflux R, and the rest is withdrawn as the final product D. Assume that V, R, and D are identical in composition since V is condensed completely. Find the ratio of the amount refluxed R to the product withdrawn D. Hint : Solve the simultaneous equations as follow in order to find the answer (R / D) : 10000 = D + W; 10000 (0.5) = D (0.95) + W (0.04); 8000 = R + D.

2 Answers  

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Whether long question or short question I can expect in the interview at IOCL ?

0 Answers   IOCL,

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which chemical reaction has the maximum evolution of heat?

3 Answers   IOCL,

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What are the most common problems encountered in a valve or bubble cap distillation column?

3 Answers   Eastman Chemical,

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Question 109 - (a) Acceptable wavefunction in quantum mechanics in the range of : negative infinity < x < positive infinity, vanishes at least at one boundary. Which of the following is the wavefunction or are the wavefunctions of acceptable theory : P = x, P = | x |, P = sin x, P = exp (-x), P = exp (-| x |)? State the reason. (b) Let linear momentum operator P = -ih d / dz. The wavefunction is S = exp (-ikz) where i x i = -1, k and h are constants. Find the linear momentum of such wavefunction by using the term P x S.

1 Answers  

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Question 89 - A hemocytometer is a device that is used for counting cells. In an engineering experiment, 100 microlitres of cell suspension is diluted with 50 microlitres of Trypan blue dye. Only death cells appear blue in color when stained with the dye. There are 57 cells detected in a hemocytometer, where 5.3 % of them appear blue when the chamber of the meter is placed under a microscope. Each square of a chamber can contain 0.0001 mL of liquid. (a) Calculate the number of viable cells. (b) The cells ocupied 5 squares. Calculate the average number of viable cells / square. (c) Calculate the dilution factor of the cell suspension by using the formula : Dilution = final volume / initial volume. (d) Calculate the concentration of viable cells / mL by using the formula : Concentration = (Average number of viable cells / square) x dilution x (square / volume).

1 Answers  

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