Chemical Engineering Basics

Question: Filler material used in welding having the lowest melting point out of the following is
[A].

aluminium

[B].

soft solder

[C].

silver solder

[D].

brazing spelter

Answer: Option B

Explanation:

No answer description available for this question.

Question: Joining of thin foils is preferred to be done by
[A].

gamma rays

[B].

X-rays

[C].

microwaves

[D].

gas welding

Answer: Option C

Explanation:

No answer description available for this question.

Question: Chromium molybdenum steel can not be welded using __________ welding.
[A].

thermit

[B].

electrical resistance

[C].

oxy-acetylene

[D].

any of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Cold heading or upsetting is categorised as the __________ process.
[A].

extrusion

[B].

bending

[C].

rolling

[D].

forging

Answer: Option D

Explanation:

No answer description available for this question.

Question: Needles are produced by
[A].

forging

[B].

swaging

[C].

extrusion

[D].

machining

Answer: Option B

Explanation:

No answer description available for this question.

Question: In continuous casting process, graphite moulds are used with a view to providing
[A].

heat resisting medium.

[B].

self lubricating qualities.

[C].

non-wetting surfaces.

[D].

chilling effect.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Filler material used in welding should have __________ as compared to the parent metal to be welded.
[A].

lower melting temperature

[B].

same melting temperature

[C].

same composition

[D].

both ‘b’ & ‘c’

Answer: Option D

Explanation:

No answer description available for this question.

Question: __________ of hard alloy and tool steel is done to make it easily machinable.
[A].

Case carburising

[B].

Tempering

[C].

Normalising

[D].

Annealing

Answer: Option B

Explanation:

No answer description available for this question.

Question: Larger length & diameter water pipes are made by
[A].

electrical resistance welding.

[B].

die casting.

[C].

semi-centrifugal casting.

[D].

continuous casting.

Answer: Option C

Explanation:

No answer description available for this question.

Question: __________ test determines the yield strength, Young’s modulus of elasticity, percentage reduction in area & percentage elongation of a material.
[A].

Tensile

[B].

Fatigue

[C].

Impact

[D].

None of these

Answer: Option A

Explanation:

No answer description available for this question.