Chemical Engineering Basics

Question: Basic open hearth furnace (BOF) is not used for producing __________ steel.
[A].

killed

[B].

rimming

[C].

high alloy

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: Normalising of a casting does not
[A].

induce stresses in it.

[B].

refine its grain structure.

[C].

reduce seggregation.

[D].

improve its mechanical properties.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Ganister contains maximum percentage of
[A].

FeO

[B].

SiO2

[C].

MgO

[D].

MnO2

Answer: Option B

Explanation:

No answer description available for this question.

Question: Annealing of a material does not
[A].

permit its further cold working.

[B].

soften it.

[C].

case harden it.

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Lead is poured into the joints between two __________ pipes.
[A].

cast iron

[B].

steel

[C].

concrete

[D].

plastic

Answer: Option A

Explanation:

No answer description available for this question.

Question: An engineer’s hammer is made of high __________ steel.
[A].

carbon

[B].

speed

[C].

silicon

[D].

chromium

Answer: Option A

Explanation:

No answer description available for this question.

Question: __________ test can be termed as the semi-distructive test.
[A].

Impact

[B].

Torsion

[C].

Hardness

[D].

Charpy

Answer: Option C

Explanation:

No answer description available for this question.

Question: Material of construction of the electrode used in the electric resistance welding is
[A].

stainless steel

[B].

graphite

[C].

copper

[D].

steel

Answer: Option C

Explanation:

No answer description available for this question.

Question: Largest application of laser welding is in __________ welding.
[A].

microspot

[B].

under water

[C].

precious metals

[D].

heavy structure

Answer: Option A

Explanation:

No answer description available for this question.

Question: Inspection of surface and sub-surface cracks in non-magnetic alloys is done by __________ testing method.
[A].

X-ray

[B].

magnetic particle

[C].

dye penetrant

[D].

ultrasonic

Answer: Option C

Explanation:

No answer description available for this question.