Answer / sekar

absorptivity = 1

Answer / jayesh

ideal black bodu absorbs whole amt of radiation inserted on it
thus absorbance = 1

as the body absorbs all thing thus reflects none
so reflectivity = 0

now good absorber is always good emitter for the case of black body
emissivity = 1

following this sequence answer is (A)

Answer / manikandan

Emissivity = 0

Answer / virendra chauhan

Emmisivity=0

send me previous year question paper for ongc gt 2011 written exam

0 Answers   ONGC,

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Question 111 - There are 6 spin orbitals in p subshell in a ground state carbon atom. Only 2 electrons fill the p subshell. Number of different ways for n electrons to occupy the k spin orbitals are k! / [ (n!) (k-n)! ]. Find the number of different configurations of electrons to occupy the p subshell in a carbon atom.

1 Answers  

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GENETIC ENGINEERING - EXAMPLE 27.4 : 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 of 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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What are the apt definitions for apparent power, active power and reactive power? Explain about different types of lamps?

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What are the chemicals are required for cooling tower passivation? Please mail me in my Email id:-nsput2000@gmail.com

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Chemical Engineering Material Balance - Three hundred gallons of a mixture containing 75.0 wt % ethanol and 25 wt % water (mixture specific gravity = 0.877) and a quantity of a 40.0 wt % ethanol - 60 wt % water mixture (specific gravity = 0.952) are blended to produce a mixture containing 60.0 wt % ethanol. The specific gravity of a substance is the ratio of density of a substance compared to the density of water. The symbol of weight percent is wt %. (a) Estimate the specific gravity of the 60 % mixture by assuming that y = mx c where y is wt % ethanol, x is mixture specific gravity. Values for m and c are constants. (b) Determine the required volume of the 40 % mixture.

1 Answers  

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How can one determine if a particular solid can be fluidized as in a fluidized bed?

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when liquid stored in spherical vessel,equilibrium shift towards liquid.what is the benefit of it?

1 Answers  

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Question 91 - In the application of Theory of Spectrometry in spectrophotometer, let n = N x C x V, V = A x t, e = a x N where n = number of molecules, N = Avogadro's number, V = volume of cuvette, A = area of cuvette, t = thickness of cuvette, C = concentration of fluid in the cuvette, e = extinction coefficient, a = effective area of molecule. (a) By using calculus in dI = -I x a x N x C x dt, prove that ln (I / Io) = -a x N x C x t, where dI is the small difference in I and dt is the small difference in t. I = intensity of light. Io = initial intensity of light. (b) Show by calculations that ln (Io / I) = e x C x t based on the answer in the previous question (a). (c) Find the equation of log (Io / I) as a function of e, C and t based on the answer in the previous question (b).

1 Answers  

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What are the some common problems associated with dense phase pneumatic conveying?

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what is load and what are the types of load?

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What is a Spool in terms of piping Industry?

2 Answers   Punj Lloyd Ltd,

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