CHEMICAL ENGINEERING | Chemical Reaction Engineering

Holding time for flow reactors is __________ the space time, for constant fluid density

Byadmin July 23, 2022July 24, 2022

Question: Holding time for flow reactors is __________ the space time, for constant fluid density
[A].

double

[B].

triple

[C].

equal to

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Chemical Engineering Basics

Permanent set in a material is produced by subjecting it to

Question: Permanent set in a material is produced by subjecting it to
[A].

triaxial loading.
[B].
fatigue loading.
[C].
stresses beyond the elastic limit.
[D].
tensile & compressive loads simultaneously.

Answer: Option C

Explanation:

No answer description available for this question.

Read More Permanent set in a material is produced by subjecting it to
CHEMICAL ENGINEERING | Heat Transfer

Heat transfer co-efficient equation for forced convection, Nu = 0.023 Re0.8 . Prn, is not valid, if the value of

Question: Heat transfer co-efficient equation for forced convection, Nu = 0.023 Re0.8 . Prn, is not valid, if the value of
[A].

n = 0.4 is used for heating.
[B].
n = 0.3 is used for cooling.
[C].
Reynolds number for the flow involved is > 10000.
[D].
Reynolds number for the flow involved is < 2100.

Answer: Option D

Explanation:

No answer description available for this question.

Read More Heat transfer co-efficient equation for forced convection, Nu = 0.023 Re0.8 . Prn, is not valid, if the value of
CHEMICAL ENGINEERING | Polymer Technology

Rayon is superior to cotton in making gauge for wound treatment, because rayon

Question: Rayon is superior to cotton in making gauge for wound treatment, because rayon
[A].

is a synthetic polymer.
[B].
does not stick to the wound unlike cotton.
[C].
can absorb over 90% of its own weight of water.
[D].
both (b) and (c).

Answer: Option B

Explanation:

No answer description available for this question.

Read More Rayon is superior to cotton in making gauge for wound treatment, because rayon
CHEMICAL ENGINEERING | Chemical Reaction Engineering

In an ideal tubular-flow reactor

Question: In an ideal tubular-flow reactor
[A].

there is no mixing in longitudinal direction.
[B].
mixing takes place in radial direction.
[C].
there is a uniform velocity across the radius.
[D].
all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

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CHEMICAL ENGINEERING

Drills are usually made of__________________?

Drills are usually made of__________________?

A. Cermets
B. High speed steel
C. Alloy steel
D. Tungsten carbide

Read More Drills are usually made of__________________?
CHEMICAL ENGINEERING | Chemical Engineering Basics

As the fluid flow rate increases, the float of the rotameter

Question: As the fluid flow rate increases, the float of the rotameter
[A].

rises in the tube.
[B].
rotates at higher speed.
[C].
rotates at lower speed.
[D].
drops down in the tube.

Answer: Option A

Explanation:

No answer description available for this question.

Read More As the fluid flow rate increases, the float of the rotameter

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