CHEMICAL ENGINEERING | Chemical Engineering Basics

Heat treatment of steel is done to mainly change its __________ properties.

Byadmin August 8, 2022

Question: Heat treatment of steel is done to mainly change its __________ properties.
[A].

physical

[B].

chemical

[C].

mechanical

[D].

surface

Answer: Option C

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING

The only suitable method for hardening the low carbon steel is case hardening. Which of the following is a case hardening process ?

The only suitable method for hardening the low carbon steel is case hardening. Which of the following is a case hardening process ?

A. Cyaniding
B. Sherardizing
C. Spheroidising
D. None of these

Read More The only suitable method for hardening the low carbon steel is case hardening. Which of the following is a case hardening process ?
Chemical Engineering Basics

The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the ______________ of a boiler ?

The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the ______________ of a boiler ?

A. Evaporative capacity
B. Evaporation efficiency
C. Thermal efficiency
D. Steam load

Read More The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the ______________ of a boiler ?
CHEMICAL ENGINEERING | Fluid Mechanics

Head developed by a centrifugal pump depends on its

Question: Head developed by a centrifugal pump depends on its
[A].

speed
[B].
impeller diameter
[C].
both (a) and (b)
[D].
neither (a) nor (b)

Answer: Option C

Explanation:

No answer description available for this question.

Read More Head developed by a centrifugal pump depends on its
CHEMICAL ENGINEERING | Chemical Engineering Basics

One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W . m-1 . k-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is

Question: One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W . m-1 . k-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is
[A].

100
[B].
900
[C].
9000
[D].
10000

Answer: Option D

Explanation:

No answer description available for this question.

Read More One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W . m-1 . k-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is
Chemical Engineering Basics

Out of the following substances, one ton of ______________ will store the maximum heat for a rise of 30°C in temperature ?

Out of the following substances, one ton of ______________ will store the maximum heat for a rise of 30°C in temperature ?

A. Steel
B. Lignite
C. Water
D. Lime stone

Read More Out of the following substances, one ton of ______________ will store the maximum heat for a rise of 30°C in temperature ?
CHEMICAL ENGINEERING | Chemical Engineering Thermodynamics

In jet refrigerators, the refrigerating fluid is practically always

Question: In jet refrigerators, the refrigerating fluid is practically always
[A].

water
[B].
ammonia
[C].
freon
[D].
brine

Answer: Option A

Explanation:

No answer description available for this question.

Read More In jet refrigerators, the refrigerating fluid is practically always

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