Answer / arun

PLA ANYONE IF FIND THE IOCL PAPERS ,SEND IT
RO :arunmalik21@yahoo.co.in

Answer / k.rajarajan

i am going to attend iocl test within a month of time.its my
dream company sir.please mail me the model question
paper.its very important sir.plese help me.my e mail id is
mistercegm@rediffmail.com

i m a frsh chemical engineer now i m confuse to attend the interview so anybody pls send model question papers to this christ_vivek33@yahoo.com

0 Answers   HPCL,

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Question 87 - According to Hardy-Weinberg Equation, p x p + 2 x p x q + q x q = 1 where p = dominant allele frequency and q = recessive allele frequency. Let p + q = 1. Fraction of population has 2 copies of the p gene = p x p. Fraction of population has 2 copies of the q gene = q x q. Fraction of population has a copy of p gene and a copy of q gene = 2 x p x q. In a small town, the allele frequency is q = 0.2 for a recessive gene, the delta-32 mutation, that gives human protection from HIV infection. (a) Find the allele frequency a dominant gene, p. (b) What percent of the population has at least a copy of the gene that cause the population either immune to HIV or less susceptible to the disease?

1 Answers  

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How to determine the particle size distribution for a given bulk solid?

3 Answers  

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Question 75 - The molecular weights M in kg / mol of 3 different monomers a, b and c in a polymer are Ma = 14, Mb = 16 and Mc = 18. The fraction of polymer chain X of 3 different monomers a, b and c in a polymer are Xa = 0.5, Xb = 0.3 and Xc = 0.2. (i) Calculate number average molecular weight by using the formula Ma Xa + Mb Xb + Mc Xc. (ii) Calculate weight average molecular weight by using the formula (Ma Xa Ma + Mb Xb Mb + Mc Xc Mc) / (Ma Xa + Mb Xb + Mc Xc). (iii) Calculate the polydispersity by using the answer in (ii) divided by answer in (i). (iv) If the molecular weight of repeat unit is 12, calculate the degree of polymerization by using the formula (Ma Xa + Mb Xb + Mc Xc) / (molecular weight of repeat unit).

1 Answers  

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DIFFERENTIAL EQUATIONS - EXAMPLE 20.3 : A differential equation is given as y” + 5y’ + 6y = 0, y(0) = 2 and y’(0) = 3. By using Laplace transform, an engineer has correctly produced the equation L {y} = (2s + 13) / [(s + 2)(s + 3)] = A / (s + 2) + B (s + 3). (a) Find the values of A and B. (b) The inversed Laplace transform of 1 / (s + a) is given by exp (-at) where a is a constant. If the statement : L {y} = 9 L { exp (-2t) } - 7 L { exp (-3t) } is correct, find the equation of y as a function of t as a solution to the differential equation stated in the beginning of this question. When L {d} = 9 L {b} - 7 L {c}, then d = 9b - 7c with b, c and d are unknowns.

1 Answers  

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what is the differance between Horizental and vertical heat exchanger?

11 Answers   Bihar Caustic and Chemicals,

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ENGINEERING DRAWING - EXAMPLE 18.1 : For a Vernier scale of representative fraction (RF) = 1 / 25, calculate the length of the scale for the reading up to 4 metres.

1 Answers  

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What's the difference between superphosphate and triple super phosphate fertilizer?

4 Answers  

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Can anyone tell me how to calculate the quantity of a third component added in an azeotropic batch distillation of a known quantity of azeotropic mixture?

1 Answers  

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A shiny brown colored element ‘x’ on heating in air becomes black in cooler name the element ‘x’and black colored compound formed?

0 Answers  

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name of the fraction at which benzene xylene and toulene is obtained during coal tar distillation

3 Answers   IFFCO,

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What is the characteristic length for slab?

0 Answers  

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