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CHEMICAL ENGINEERING

Heating of an ore below its melting point in presence of excess of air is called

Question: Heating of an ore below its melting point in presence of excess of air is called
[A].

calcination

[B].

smelting

[C].

roasting

[D].

sublimation

Answer: Option C

Explanation:

No answer description available for this question.

Heating of an ore below its melting point in presence of excess of air is called Read More »

CHEMICAL ENGINEERING, Chemical Engineering Basics

Carbon percentage in high speed steel tool material is 0.6 to 1.0. The hardness of carbon tool steels is increased, when it is alloyed with

Question: Carbon percentage in high speed steel tool material is 0.6 to 1.0. The hardness of carbon tool steels is increased, when it is alloyed with
[A].

vanadium & chromium

[B].

silicon

[C].

tungsten

[D].

manganese

Answer: Option A

Explanation:

No answer description available for this question.

Carbon percentage in high speed steel tool material is 0.6 to 1.0. The hardness of carbon tool steels is increased, when it is alloyed with Read More »

CHEMICAL ENGINEERING, Chemical Engineering Basics

Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an __________ body.

Question: Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an __________ body.
[A].

grey

[B].

black

[C].

opaque

[D].

white

Answer: Option A

Explanation:

No answer description available for this question.

Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an __________ body. Read More »

CHEMICAL ENGINEERING, Chemical Engineering Basics

__________ is the trade name assigned to a non-ferrous cast alloy composed of cobalt, chromium & tungsten.

Question: __________ is the trade name assigned to a non-ferrous cast alloy composed of cobalt, chromium & tungsten.
[A].

Stellite

[B].

High speed steel

[C].

Cermet

[D].

Alnico

Answer: Option A

Explanation:

No answer description available for this question.

__________ is the trade name assigned to a non-ferrous cast alloy composed of cobalt, chromium & tungsten. Read More »

CHEMICAL ENGINEERING, Chemical Engineering Basics

Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other earth moving equipments contain iron, carbon and

Question: Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other earth moving equipments contain iron, carbon and
[A].

manganese

[B].

silicon

[C].

nickel

[D].

chromium

Answer: Option A

Explanation:

No answer description available for this question.

Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other earth moving equipments contain iron, carbon and Read More »

CHEMICAL ENGINEERING, Chemical Engineering Basics

Wohler test is a destructive test to find out the __________ strength of a prepared metal specimen.

Question: Wohler test is a destructive test to find out the __________ strength of a prepared metal specimen.
[A].

creep

[B].

fatigue

[C].

endurance

[D].

tensile

Answer: Option B

Explanation:

No answer description available for this question.

Wohler test is a destructive test to find out the __________ strength of a prepared metal specimen. Read More »

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.

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

CHEMICAL ENGINEERING, Chemical Engineering Basics