CHEMICAL ENGINEERING | Heat Transfer

Heat transfer occurs by natural convection because change in temperature causes difference in

Byadmin August 25, 2022

Question: Heat transfer occurs by natural convection because change in temperature causes difference in
[A].

viscosity

[B].

density

[C].

thermal conductivity

[D].

heat capacity

Answer: Option B

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Heat Transfer

A measure of the extent to which viscous heating is important relative to the heat flow resulting from the impressed temperature difference is represented by the __________ number.

Question: A measure of the extent to which viscous heating is important relative to the heat flow resulting from the impressed temperature difference is represented by the __________ number.
[A].

Condensation
[B].
Grashoff
[C].
Stantan
[D].
Brinkman

Answer: Option D

Explanation:

No answer description available for this question.

Read More A measure of the extent to which viscous heating is important relative to the heat flow resulting from the impressed temperature difference is represented by the __________ number.
CHEMICAL ENGINEERING | Heat Transfer

In a liquid-liquid heat exchanger, for the same process temperature, the ratio of the LMTD in parallel flow to the LMTD in counter flow is always

Question: In a liquid-liquid heat exchanger, for the same process temperature, the ratio of the LMTD in parallel flow to the LMTD in counter flow is always
[A].

< 1
[B].
> 1
[C].
1
[D].
∞

Answer: Option A

Explanation:

No answer description available for this question.

Read More In a liquid-liquid heat exchanger, for the same process temperature, the ratio of the LMTD in parallel flow to the LMTD in counter flow is always
CHEMICAL ENGINEERING | Environmental Engineering

Infective bacteria in water is killed by the __________ process.

Question: Infective bacteria in water is killed by the __________ process.
[A].

sterilisation
[B].
aeration
[C].
disinfection
[D].
none of these

Answer: Option A

Explanation:

No answer description available for this question.

Read More Infective bacteria in water is killed by the __________ process.
CHEMICAL ENGINEERING | Chemical Process

Zeigler process

Question: Zeigler process
[A].

produces high density polyethylene.
[B].
produces low density polyethylene.
[C].
uses no catalyst.
[D].
employs very high pressure.

Answer: Option A

Explanation:

No answer description available for this question.

Read More Zeigler process
CHEMICAL ENGINEERING | Fluid Mechanics

Maintenance cost of a __________ pump for a particular duty is the least.

Question: Maintenance cost of a __________ pump for a particular duty is the least.
[A].

centrifugal
[B].
reciprocating
[C].
volute
[D].
gear

Answer: Option A

Explanation:

No answer description available for this question.

Read More Maintenance cost of a __________ pump for a particular duty is the least.
CHEMICAL ENGINEERING | Chemical Engineering Basics

In chemical dehumidification of air

Question: In chemical dehumidification of air
[A].

both specific humidity & dry bulb temperature increases.
[B].
both specific humidity & dry bulb temperature decreases.
[C].
specific humidity decreases & dry bulb temperature increases.
[D].
specific humidity increases & dry bulb temperature decreases.

Answer: Option C

Explanation:

No answer description available for this question.

Read More In chemical dehumidification of air

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