CHEMICAL ENGINEERING | Chemical Engineering Basics

Electrochemical corrosion occurs

Byadmin July 30, 2022

Question: Electrochemical corrosion occurs
[A].

where the liquid electrolytes containing free ions are present.

[B].

only in alloys.

[C].

only in pure metals.

[D].

due to direct chemical action of metal with oxygen.

Answer: Option A

Explanation:

No answer description available for this question.

Chemical Engineering Basics

When an isolated thermodynamic system executes a process ___________________?

When an isolated thermodynamic system executes a process ___________________?

A. Work is done
B. Heat transfer takes place
C. Mass flow occurs across the boundary of the system
D. No chemical reaction takes place within the system

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CHEMICAL ENGINEERING | Heat Transfer

__________ heat exchanger is the most suitable, when the temperature of shell side fluid is much higher than that of tube side.

Question: __________ heat exchanger is the most suitable, when the temperature of shell side fluid is much higher than that of tube side.
[A].

Single pass, fixed tube sheet
[B].
U-tube
[C].
Three pass, fixed tube sheet
[D].
none of these

Answer: Option B

Explanation:

No answer description available for this question.

Read More __________ heat exchanger is the most suitable, when the temperature of shell side fluid is much higher than that of tube side.
CHEMICAL ENGINEERING | Fluid Mechanics

Drag is the force component exerted on an immersed object,

Question: Drag is the force component exerted on an immersed object,
[A].

passing the centroid of the body at 60°to the direction of motion.
[B].
the component being parallel to theflow direction.
[C].
the component being normal to the flow direction.
[D].
none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Read More Drag is the force component exerted on an immersed object,
CHEMICAL ENGINEERING | Chemical Engineering Basics

Lap joints are preferred over butt joints in soldering/brazing, because these joints are

Question: Lap joints are preferred over butt joints in soldering/brazing, because these joints are
[A].

weaker in tension but stronger in shear.
[B].
weaker in shear but stronger in tension.
[C].
stronger in both shear and tension.
[D].
The lap joints are easily made.

Answer: Option D

Explanation:

No answer description available for this question.

Read More Lap joints are preferred over butt joints in soldering/brazing, because these joints are
CHEMICAL ENGINEERING | Fuels and Combustion

In Lurgi coal gasifier,

Question: In Lurgi coal gasifier,
[A].

coking coals cannot be used.
[B].
low carbon conversion efficiency is achieved.
[C].
entrainment of solids is higher.
[D].
larger quantity of coal can be processed.

Answer: Option D

Explanation:

No answer description available for this question.

Read More In Lurgi coal gasifier,
CHEMICAL ENGINEERING | Chemical Engineering Plant Economics

Annual depreciation cost are not constant when, the __________ method of depreciation calculation is used.

Question: Annual depreciation cost are not constant when, the __________ method of depreciation calculation is used.
[A].

straight line
[B].
sinking fund
[C].
present worth
[D].
declining balance.

Answer: Option D

Explanation:

No answer description available for this question.

Read More Annual depreciation cost are not constant when, the __________ method of depreciation calculation is used.

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