CHEMICAL ENGINEERING | Heat Transfer

Heat transfer by natural convection is enhanced in system with

Byadmin August 25, 2022

Question: Heat transfer by natural convection is enhanced in system with
[A].

high viscosity.

[B].

high co-efficient of thermal expansion.

[C].

low temperature gradients.

[D].

low density change with temperature.

Answer: Option B

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Chemical Reaction Engineering

A catalyst

Question: A catalyst
[A].

initiates a reaction.
[B].
lowers the activation energy of reacting molecules.
[C].
is capable of reacting with any one of the reactants.
[D].
can not be recovered chemically unchanged at the end of a chemical reaction.

Answer: Option B

Explanation:

No answer description available for this question.

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CHEMICAL ENGINEERING | Furnace Technology

Combustion of furnace oil in a furnace (soaking pit) with preheated combustion air at 400°C results in saving of about __________ percent furnace oil as compared to its combustion with atmospheric air, if the flue gas outlet temperature from the soaking pit is 1200°C.

Question: Combustion of furnace oil in a furnace (soaking pit) with preheated combustion air at 400°C results in saving of about __________ percent furnace oil as compared to its combustion with atmospheric air, if the flue gas outlet temperature from the soaking pit is 1200°C.
[A].

5
[B].
60
[C].
20
[D].
40

Answer: Option C

Explanation:

No answer description available for this question.

Read More Combustion of furnace oil in a furnace (soaking pit) with preheated combustion air at 400°C results in saving of about __________ percent furnace oil as compared to its combustion with atmospheric air, if the flue gas outlet temperature from the soaking pit is 1200°C.
CHEMICAL ENGINEERING | Chemical Engineering Thermodynamics

A reasonably general expression for vapour-liquid phase equilibrium at low to moderate pressure is Φi yi P = Yi xi fi° where, Φ is a vapor fugacity component, Yi is the liquid activity co-efficient and fi° is the fugacity of the pure component i. the Ki value (Yi = Ki xi) is therefore, in general a function of

Question: A reasonably general expression for vapour-liquid phase equilibrium at low to moderate pressure is Φi yi P = Yi xi fi° where, Φ is a vapor fugacity component, Yi is the liquid activity co-efficient and fi° is the fugacity of the pure component i. the Ki value (Yi = Ki xi) is therefore, in general a function of
[A].

temperature only.
[B].
temperature and pressure only.
[C].
temperature, pressure and liquid composition xi only.
[D].
temperature, pressure, liquid composition xi and vapour composition yi.

Answer: Option C

Explanation:

No answer description available for this question.

Read More A reasonably general expression for vapour-liquid phase equilibrium at low to moderate pressure is Φi yi P = Yi xi fi° where, Φ is a vapor fugacity component, Yi is the liquid activity co-efficient and fi° is the fugacity of the pure component i. the Ki value (Yi = Ki xi) is therefore, in general a function of
CHEMICAL ENGINEERING | Chemical Engineering Basics

Out of the following, __________ pipe is the least corrosion resistant.

Question: Out of the following, __________ pipe is the least corrosion resistant.
[A].

mild steel
[B].
copper
[C].
wrought iron
[D].
stainless steel

Answer: Option C

Explanation:

No answer description available for this question.

Read More Out of the following, __________ pipe is the least corrosion resistant.
CHEMICAL ENGINEERING | Mass Transfer

For absorbers, high pressure drop results in

Question: For absorbers, high pressure drop results in
[A].

increased efficiency.
[B].
decreased efficiency.
[C].
high operating cost.
[D].
better gas liquid contact.

Answer: Option C

Explanation:

No answer description available for this question.

Read More For absorbers, high pressure drop results in
CHEMICAL ENGINEERING | Chemical Engineering Basics

Case hardening of a material is

Question: Case hardening of a material is
[A].

followed by tempering or carburising.
[B].
preceded by its tempering.
[C].
done to get a soft ductile interior with a very hard surface.
[D].
carried out to get extreme hardness in its core.

Answer: Option D

Explanation:

No answer description available for this question.

Read More Case hardening of a material is

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