CHEMICAL ENGINEERING Archives

Molybdenum steels containing 0.15 to 0.40% molybdenum

Question: Molybdenum steels containing 0.15 to 0.40% molybdenum
[A].

are prone to temper brittleness.

[B].

are used for automobile parts like gears, axle, shaft, bearings etc.

[C].

have very poor fatigue resistance.

[D].

do not contain nickel or chromium or both.

Answer: Option B

Explanation:

No answer description available for this question.

Molybdenum steels containing 0.15 to 0.40% molybdenum Read More »

Austenitic manganese steel used for making jaws of crushing machines contains about __________ percent manganese.

CHEMICAL ENGINEERING, Materials and Construction / admin

Question: Austenitic manganese steel used for making jaws of crushing machines contains about __________ percent manganese.
[A].

1.5-2

[B].

3.5-4.5

[C].

7-9

[D].

12-14

Answer: Option D

Explanation:

No answer description available for this question.

Austenitic manganese steel used for making jaws of crushing machines contains about __________ percent manganese. Read More »

CHEMICAL ENGINEERING, Materials and Construction

‘Semi steel’ is

CHEMICAL ENGINEERING, Materials and Construction / admin

Question: ‘Semi steel’ is
[A].

produced by adding 10-20% steel to the cupola charge.

[B].

stronger than cast iron.

[C].

both (a) and (b).

[D].

neither (a) nor (b).

Answer: Option C

Explanation:

No answer description available for this question.

‘Semi steel’ is Read More »

CHEMICAL ENGINEERING, Materials and Construction

Addition of nickel to copper improves its

CHEMICAL ENGINEERING, Materials and Construction / admin

Question: Addition of nickel to copper improves its
[A].

machinability

[B].

ductility

[C].

strength

[D].

hardness

Answer: Option D

Explanation:

No answer description available for this question.

Addition of nickel to copper improves its Read More »

CHEMICAL ENGINEERING, Materials and Construction

Creep is not exhibited at low temperature by

CHEMICAL ENGINEERING, Materials and Construction / admin

Question: Creep is not exhibited at low temperature by
[A].

rubber

[B].

acrylics

[C].

lead

[D].

plastics

Answer: Option C

Explanation:

No answer description available for this question.

Creep is not exhibited at low temperature by Read More »

CHEMICAL ENGINEERING, Materials and Construction

Bollman extractor

CHEMICAL ENGINEERING, Mass Transfer / admin

Question: Bollman extractor
[A].

is a static bed leaching equipment.

[B].

is used for extraction of oil from oilseed.

[C].

is a centrifugal extractor.

[D].

employs only counter-current extraction.

Answer: Option B

Explanation:

No answer description available for this question.

Bollman extractor Read More »

CHEMICAL ENGINEERING, Mass Transfer

Interchain forces are the weakest in case of

CHEMICAL ENGINEERING, Materials and Construction / admin

Question: Interchain forces are the weakest in case of
[A].

plastics

[B].

fibres

[C].

elastomers

[D].

both rubber & elastomers

Answer: Option D

Explanation:

No answer description available for this question.

Interchain forces are the weakest in case of Read More »

CHEMICAL ENGINEERING, Materials and Construction

Invar contains the highest percentage of

CHEMICAL ENGINEERING, Materials and Construction / admin

Question: Invar contains the highest percentage of
[A].

vanadium

[B].

iron

[C].

tungsten

[D].

cobalt

Answer: Option B

Explanation:

No answer description available for this question.

Invar contains the highest percentage of Read More »

CHEMICAL ENGINEERING, Materials and Construction

Heavy duty bearings are usually made of

CHEMICAL ENGINEERING, Materials and Construction / admin

Question: Heavy duty bearings are usually made of
[A].

white metal

[B].

phosphorous bronze

[C].

monel

[D].

zinc

Answer: Option A

Explanation:

No answer description available for this question.

Heavy duty bearings are usually made of Read More »

CHEMICAL ENGINEERING, Materials and Construction

Percentage of silver in German silver is

CHEMICAL ENGINEERING, Materials and Construction / admin

Question: Percentage of silver in German silver is
[A].

[B].

[C].

[D].

Answer: Option D

Explanation:

No answer description available for this question.

Percentage of silver in German silver is Read More »

CHEMICAL ENGINEERING, Materials and Construction