Answer / sajil

ya deafnetly,anything less than atmosphere can be called as vacuum..

Answer / ankit negi

atm pressure is 1.013 kg/cm2 at sea lvel. at higher
altitudes atm pressure reduces,so a man at high altitude
will not be called in vacuum....

Answer / sudip bharati

vacuum is a negative pressure created by surrounding system
for their requirement, which is much or more less than the
atmospheric pressure. it is always measured with respect to
the surrounding atmospheric pressure either it is at hill
station or under the sea level.

Answer / renish

vacuum is always measured on sea/mercury level if atm
pressure is below some mmhg then its called vacuum

Answer / vaishtushar

Vacuum is space that is empty of matter.When the pressure exerting is much lesser than the atmospheric pressure then it is called vacuum.If it is slightly less than atmospheric pressure it is not called vacuum.fo ex at hill stationsthey are not living in vacuum.

on which website can i get previous GATE question papers?

0 Answers  

which reformer efficiencywise best?

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Explain how is waste heat boilers categorized?

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if i added hypo before DM plant so i will affect my resins of anion or cation. if affect it so do prevent what kind of step should be taken to remove hypo before DM inlet?

0 Answers   Hindustan Unilever Limited,

What is the method adopted to minimize shell side pressure drop in a shell?

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What is are the main terms in Unit Operations? and what is its charecteristics?

8 Answers   HPCL,

Chemical Engineering Energy Balance - Please match the term A - E as follow with the stated definition : A. Yield. B. Selectivity. C. Relative saturation. D. Molal saturation. E. Absolute saturation. i. Answer : ? (moles of desired product formed) / (moles that would have been formed if there were no side reactions and the limiting reactant has reacted completely). ii. Answer : ? (moles of desired product formed) / (moles of undesired product formed). iii. Answer : ? (relative humidity 40 % means partial pressure of water vapour equals 4 / 10 of the vapour pressure of water at the system temperature). iv. Answer : ? (moles of vapour) / (moles of vapour dry gas). v. Answer : ? (mass of vapour) / (mass of dry gas).

1 Answers  

Question 42 - According to Margules Equation, P = x(1) p(1) g(1) + x(2) p(2) g(2) for a two-component mixture where P is bubble pressure, x is mole fraction, p is saturation pressure, g is constant given by ln g(1) = x(2) A x(2). Find the value of A as a constant when P = 1.08 bar, p(1) = 0.82 bar, p(2) = 1.93 bar in a 50 : 50 mole fraction mixture. Estimate the pressure required to completely liquefy the 30 : 70 mixture using the same equation, by proving P = 1.39 bar. Take note that ln g(2) = x(1) A x(1), ln g(1) = x(2) A x(2).

1 Answers  

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

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What is the best way to configure a bypass line in slurry services?

0 Answers  

1.How a chlorine leak is detected? 2.What would happen if excess chlorine is added to water in cooling tower?

3 Answers