CHEMICAL ENGINEERING

Question: Brittleness induced due to the presence of sulphur in steel can be reduced by adding
[A].

manganese

[B].

magnesium

[C].

vanadium

[D].

copper

Answer: Option A

Explanation:

No answer description available for this question.

Question: Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is
[A].

malleable iron

[B].

grey cast iron

[C].

chilled cast iron

[D].

white cast iron

Answer: Option A

Explanation:

No answer description available for this question.

Question: Energy of the sun arises mainly from __________ reactions.
[A].

fusion

[B].

fission

[C].

combustion

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Cast iron has the unique property of high
[A].

ductility

[B].

damping characteristics

[C].

hardness

[D].

malleability

Answer: Option B

Explanation:

No answer description available for this question.

Question: Machinability of hard alloys & tool steels is improved by
[A].

spherodising

[B].

annealing

[C].

tempering

[D].

normalising

Answer: Option B

Explanation:

No answer description available for this question.

Question: Multistage compression is necessary for high efficiency,
[A].

if the ratio of the delivery pressure to the intake pressure exceeds 5:1.

[B].

when large amount of gas is to be compressed.

[C].

when the delivered gas is desired at very high velocity.

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Wrought iron does not have
[A].

uniform strength in all directions.

[B].

ability to hold protective coating.

[C].

high ductility & corrosion resistance.

[D].

easily weldable characteristics.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Nitrogen is not an essential component of
[A].

protein

[B].

urea

[C].

oils & fats

[D].

any of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: Dry saturated steam can be converted into superheated steam by
[A].

increasing its cross-sectional area of flow.

[B].

passing it through a pressure reducing valve.

[C].

forcing it downwards through a vertical tube.

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

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

mild steel

[B].

concrete

[C].

cast iron

[D].

asbestos cement

Answer: Option C

Explanation:

No answer description available for this question.