CHEMICAL ENGINEERING | Heat Transfer

Natural convection is characterised by

Byadmin August 23, 2022

Question: Natural convection is characterised by
[A].

Grashhoff number

[B].

Peclet number

[C].

Reynolds number

[D].

Prandtl number

Answer: Option A

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Chemical Process

__________ is produced using polycondensation reaction.

Question: __________ is produced using polycondensation reaction.
[A].

Polythene
[B].
Phenol formaldehyde
[C].
Poly vinyl chloride
[D].
none of these

Answer: Option B

Explanation:

No answer description available for this question.

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CHEMICAL ENGINEERING | Chemical Engineering Basics

Carbon is present in the form of __________ in grey cast iron.

Question: Carbon is present in the form of __________ in grey cast iron.
[A].

spheroids
[B].
nodular aggregates of graphite
[C].
flakes
[D].
cementite

Answer: Option C

Explanation:

No answer description available for this question.

Read More Carbon is present in the form of __________ in grey cast iron.
CHEMICAL ENGINEERING | Chemical Engineering Thermodynamics

Critical temperature is defined as the temperature above which a gas will

Question: Critical temperature is defined as the temperature above which a gas will
[A].

not liquify (barring exceptions).
[B].
immediately liquify.
[C].
never liquify however high the pressure may be.
[D].
none of these.

Answer: Option C

Explanation:

No answer description available for this question.

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CHEMICAL ENGINEERING | Chemical Engineering Basics

In spite of large heat transfer co-efficients in boiling liquids, fins are used advantageously, where the entire surface is exposed to __________ boiling.

Question: In spite of large heat transfer co-efficients in boiling liquids, fins are used advantageously, where the entire surface is exposed to __________ boiling.
[A].

film
[B].
nucleate
[C].
transition
[D].
all modes of

Answer: Option D

Explanation:

No answer description available for this question.

Read More In spite of large heat transfer co-efficients in boiling liquids, fins are used advantageously, where the entire surface is exposed to __________ boiling.
CHEMICAL ENGINEERING

The elastic strain energy of a unit length of an edge dislocation as compared to that of a screw dislocation is____________________?

The elastic strain energy of a unit length of an edge dislocation as compared to that of a screw dislocation is____________________?

A. More
B. Equal
C. Less
D. Double

Read More The elastic strain energy of a unit length of an edge dislocation as compared to that of a screw dislocation is____________________?
CHEMICAL ENGINEERING | Fluid Mechanics

During ageing of fluid carrying pipes, the

Question: During ageing of fluid carrying pipes, the
[A].

pipe becomes smoother with use.
[B].
friction factor increases linearly with time.
[C].
absolute roughness decreases with time.
[D].
absolute roughness increases linearly with time.

Answer: Option D

Explanation:

No answer description available for this question.

Read More During ageing of fluid carrying pipes, the

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