CHEMICAL ENGINEERING

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.

Question: Cemented carbide tools are not suitable for cutting
[A].

aluminium

[B].

brass

[C].

cast iron

[D].

steel

Answer: Option A

Explanation:

No answer description available for this question.

Question: Austempering process results in the formation of __________ structure.
[A].

martensitic

[B].

bainitic

[C].

carburised

[D].

stressed

Answer: Option B

Explanation:

No answer description available for this question.

Question: Lime contains about 90% CaO. Percentage CaO present in limestone is about
[A].

25

[B].

50

[C].

70

[D].

80

Answer: Option B

Explanation:

No answer description available for this question.

Question: Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of
[A].

lumps

[B].

pellets

[C].

briquettes

[D].

sinter

Answer: Option B

Explanation:

No answer description available for this question.

Question: A friction lighter is normally used for lighting gas welding torch, because of the reason that
[A].

its initial cost is very low.

[B].

duration of spark created is very small.

[C].

safety of welder is ensured.

[D].

it is easier to operate & maintain.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Filler metal is used in __________ welding.
[A].

braze

[B].

electric spot

[C].

projection

[D].

seam

Answer: Option A

Explanation:

No answer description available for this question.