Answer / dharmendra maurya

in confined space entry minimum o2 19.5% and maximum o2 22%

Answer / diksha singh

this answer is right

Answer / sbaskar

A minimum of 19% is required.Maximum oxygen present in air is 21% only by volume.

Answer / sundar

oxygen need limit between 19.5-23.5%

Answer / badhehm

above 20

Answer / bhanu

limit the person can carry his work in confined space entry 19 to 21%

can anyone send me the written test paper of Indian oil corporation ltd. My email id is pratuljakhmola@yahoo.com

0 Answers  

Chemical Engineering Unit Operation - Which of the sequence below represent a feasible flows of ethanol processing plants using cellulose as starting material? A. raw material --> heat exchanger --> distillation column --> reactor. B. reactor --> distillation column --> raw material --> heat exchanger. C. heat exchanger --> raw material --> distillation column --> reactor. D. raw material --> heat exchanger --> reactor --> distillation column. E. distillation column --> raw material --> reactor --> heat exchanger.

1 Answers  

BIOCHEMICAL ENGINEERING INSTRUMENTATION - EXAMPLE 29.5 : The following formula is used as a reference : (analyte signal) / (internal standard signal) = (f-factor) x (concentration of analyte) / (concentration of internal standard). A solution containing 3 mM of analyte and 4 mM of internal standard gave peak signals of 2 and 3 mamps respectively. Another similar solution containing 2 mM of analyte and 1 mM of internal standard gave peak signals of 1 and 4 mamps respectively. Find the average f-factor.

1 Answers  

COMPUTER PROGRAMMING FOR ENGINEERS - EXAMPLE 17.2 : There are 5 simultaneous equations with 5 unknowns as follow : 16 V - 4 X - Z = 36, 4 X - 4 W - Y + Z = 3, 8 V + 4 W - X + Y = 10, X - W = 1, V + W = 0. Find the values of V, W, X, Y and Z accurately within 15 minutes. State the computer program that you use to get the answers.

1 Answers  

Question 48 - Let a ^ 2 = a x a and a ^ 3 = a x a x a where ^ is power function. Niobium is a metal with a body-centered cubic structure. The length of the unit cell structure is b = 0.3349 nm. (a) Find the volume for a unit cell structure for niobium. (b) There are 2 atoms per unit cell structure of niobium. The metal has a molar mass of 92.9 g / mol. One mole of the metal consists of 6.02 x 10 ^ 23 atoms. Find the mass of niobium per unit cell and the density of niobium.

1 Answers  

How can one quickly estimate the additional pressure drop to be introduced with more tube passes?

0 Answers  

What is the difference beteween in specticle blind and slip plate

1 Answers   ENI,

What type of heat exchangers are most commonly used for a large-scale plant-cooling loop using seawater as the utility?

0 Answers  

Why should chemical equation be balanced?

0 Answers  

Why does catalytic converter used in an automobile?

0 Answers  

What is the procedure to estimate the friction factor involved in heat exchanger tubes?

0 Answers  

ENGINEERING PHYSICS - EXAMPLE 30.3 : (a) The quantum number m is given by m = -s, -s + 1. If s = 0.5, find the values of m. (b) | T > = (cos T) | V > + (sin T) | H >. The V and H states form a basis for all polarizations. Let cos T = 0.8. (i) If (sin T)(sin T) + (cos T)(cos T) = 1, find the value of sin T. (ii) For | T > = a | V > + b | H >, where a x a represents the probability of | V > and b x b represents the probability of | H >. Which one is more abundant, | V > or | H >? (iii) Find the value of T without using any mathematical tools.

1 Answers