What is the difference between composite and alloy metals ?

Lovy

• Aug 7th, 2018

Alloys and composites are mixtures of elements. The main difference between alloy and composite is that alloy has at least one metal in its composition whereas composites do not have metal components.

teju

• Aug 1st, 2017

A composite metal is a material made of two or more different metals having different physical or chemical properties that when combined produce a material with characteristics different from individu...

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What is the difference between heat and mass transfer ?

swara

• Aug 9th, 2018

Heat transfer may be defined as the flow of energy or heat from higher temperature region to lower temperature region due to temperature difference.
Mass transfer may be defined as flow of conc. of molecules from solute to solvent due to concentration difference.

kumar shivam

• Apr 25th, 2018

Heat Transfer deals with the movement of heat and temperature gradients while Mass Transfer deals with concentrations of a particular substance. ...

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How we can find specific heat, enthalpy, minimum ignition Energy and other thermodynamics properties of a new compound in pharma manufacturing industry.

Rushikesh urane

• Jul 18th, 2018

There are many calculation for thermodynamics .......like specific heat=s=q/m*dT

ashish mishra

• Sep 7th, 2016

There are many methods available for calculation of thermodynamic properties. Use chemical properties handbook by Yaws.

like heat capacity : cp=A+Bt+ct^2 +Dt^3
Where ABCD are different values for different compound.

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Why Stainless Steel is not corrosive?

Dibyendu Mandal

• May 18th, 2018

Stainless Steel contains cr.

Nijal Shah

• May 2nd, 2018

Stainless steel contains some percentage of chromium. Chromium reacts with oxygen to form Cr2O and thus prevents further oxidation of iron to form rust, so SS is noncorrosive

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What is the Density of Steel?

Akash

• Apr 26th, 2018

Mass divided volume is for density

Anietie Udoh

• Jun 30th, 2017

8.05g/cm3 or 8050kg/m3

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Manish Firake

• Apr 13th, 2018

Fractionation is a separation process in which a certain quantity of a mixture (gas, solid, liquid, enzymes, suspension, or isotope) is divided during a phase transition, into a number of smaller quan...

Successor

• May 29th, 2017

Distillation is a separation of one volatile component from a mixture of two or more
Fractionation is a separation of a certain component from many e.g gasoline

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Nirav soni

• Mar 31st, 2018

Distillation column is separate the two component Based on its volatility difference, lighter and low boiling point fluid got up side and higher and high boiling point fluid got in bottom as a product.

Arul

• Jan 26th, 2018

The lighter, lower boiling point components evaporate and travel up the column to form the top product and the heavier, higher boiling point components condense and travelling down the column to form the bottom product.

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Divyansh bhushan Sen

• Jan 20th, 2018

Unit operation only physical change occur like Drying, Absorption,
Unit process both physical change & chemical change occur like Chlorination, nitration, hydrogenation

Rajat

• Oct 4th, 2017

Unit operations concern with the physical changes of the system.
Unit processes are concern with physical as well as chemical changes of the system.

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What is Unit Process and Unit Operations? How they are different from one another?

Vishal

• Nov 28th, 2017

Unit process includes chemical change where as unit operation includes physical change

Kingsuk Karmakar

• Aug 14th, 2017

In process where only chemical changes occurs that is called Unit Process and where no chemical changes occurs only physical changes occurs that is called Unit Operation. Unit Process example like d...

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Reena Mhatre

• Nov 17th, 2017

The valence of an elementor compound does depend on the number of hydrogen ions (H+) accepted or hydroxyl ions (OH-) denoted for each atomic weight or molecular weight.

Tarnveer Singh

• Oct 21st, 2017

Valency is the combining capacity of an element. For metals, it is equal to the number of electrons in the outermost shell of their atoms, and for nonmetals it is eight minus the number of electron...

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What is the difference between coagulation and flocculation?

Ankit Yadav

• Oct 18th, 2017

Coagulation is the chemical process for separation of Effluent from water by adding some coagulants like aluminum sulfate aluminum chloride. when flocculation is a physical operation of removing eff...

Anietie Udoh

• Jun 30th, 2017

Coagulation is purely a chemical process in which the coagulant, often a salt, (e.g Alum) breaks down to release charges which induces the settling of the particles of a suspension while Flocculation is a physical process. The flocculant is often a polymer which induces the settling of particles.

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As Bernaulli's theorem is applied on fluids, so can we apply it on gases also?

Mohamed Asharaf

• Oct 7th, 2017

The assumptions in which Bernoullis equation derived are 1.Inviscid Flow 2.Steady Flow 3.Density is Constant 4.Along the Stream-line Since the gas flow obey these properties, we can conclude that Be...

deewakar vats

• Aug 13th, 2017

Sorry sir but there are certain assumption in bernaullis theorem that
1 flow is steady
2 flow is ideal
3 flow is incompressible or const density so a gas is a complessible and density can vary as per the equation
v2/g + P/w +y=const

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Why 98% H2SO4 is not corrosive with Mild Steel?

samuel

• Sep 26th, 2017

Absence of free ions in 98%h2so4 leads no corrosion.

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What is the role of software in process equipment design and what software should one refer to while dealing with related problems?

Aakash

• Sep 17th, 2017

Software are necessary because they are used in simulation of a process for example to find out the composition of distillate and bottom product of distillation column and we can also vary the number ...

Sandeep cheekati

• Mar 14th, 2016

We can use Dynochem, Visimix, Aspen plus

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divakarnaik822

• Sep 10th, 2017

Unit operation is the basic step in any chemical engineering related fields, in this operation only physical changes are occurred but not chemical changes
Ex:-heating, cooling, evaporation, sedimentation

Akash shrama

• Aug 13th, 2017

Each chemical process frequently consists of a fewer number of distinct individual step.

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What is the difference between Filtration and Sedimentation?

Mani

• Sep 7th, 2017

Sedimentation is a separation of particles depending upon their density whereas filtration is a separation of particles depending upon particle size.

Ravi

• Jul 5th, 2017

Sedimentation is the separation of solids from liquids by gravitational method where as filtration is the separation of solids from liquids by filter medium

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What is 3rd Law of Thermodynamics?

Bandana

• Aug 4th, 2017

At absolute 0 degree entropy of a substance is zero, as entropy is a measurement of degree of randomness.

Kingsuk Karmakar

• Aug 2nd, 2017

The entropy of a perfectly crystalline substance at zero K or absolute zero is taken to be zero.
This law is only applicable for perfectly crystalline substance. If there is imperfection at 0 K, the will be larger then zero.

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What is the basis of choosing the shell side and tube side fluid?

Kingsuk Karmakar

• Aug 4th, 2017

If your process fluid is corrosive nature then you have choose flow in tube side. Because if fluid damage the tube it has been replace is easier and less cheaper then shell side. 2. The toxic and haza...

Sankar

• May 23rd, 2016

Tubes can be easily detached from the main body of a heat exchanger. Therefore, in case of corrosive fluid its more convenient to use it in the tube side.

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What is use of Reynolds number in designing of Heat exchange?

Dhruv

• Jul 17th, 2017

Use for determination of Shell side and tube side heat transfer coefficient, pressure drop, selection of tube side and shell side process fluid,

D.S.

• Apr 17th, 2017

The Reynolds number is first used to understand what flow regime (i.e. turbulent, transition zone, laminar). It is then used to calculate the shell-side and tube-side film coefficients which are then used to calculate an overall U.

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Kingsuk Karmakar

• Jul 13th, 2017

Water density is 1 and Benzene density is 0.8765 and they are both immiscible liquid or small amount miscible (1.84 g/l). If any mixture solution contain water and benzene, water settle in lower layer (because water have higher density then benzene) and benzene present in upper layer.

Dhaval

• Jan 12th, 2017

First one is that we have two liquids 1. Water & 2. Benzene Benzene is insoluble in water. Thus both liquid solutions are immiscible. We know that We have extraction process during which the 2 liquid...

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