Chemical Engineering Basics

Question: In connection with corrosion of metals, passivation is the process that
[A].

intensifies deterioration.

[B].

changes the composition of the metal.

[C].

inhibits further deterioration.

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Failure of a material is attributed to __________ if it fails below its yield point.
[A].

impact loading

[B].

fatigue

[C].

creep

[D].

straining

Answer: Option B

Explanation:

No answer description available for this question.

Question: Materials having __________ lattice structure are usually the most ductile.
[A].

body centred cubic (bcc)

[B].

hexagonal close packed (hcp)

[C].

face centred cubic (fcc)

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: Dryness fraction of dry steam is
[A].

0

[B].

∞

[C].

1

[D].

0.5

Answer: Option C

Explanation:

No answer description available for this question.

Question: Fibrous fracture is normally encountered in the __________ materials.
[A].

hard

[B].

elastic

[C].

ductile

[D].

brittle

Answer: Option C

Explanation:

No answer description available for this question.

Question: Carbon is present in the form of __________ in grey cast iron.
[A].

spheroids

[B].

nodular aggregates of graphite

[C].

flakes

[D].

cementite

Answer: Option C

Explanation:

No answer description available for this question.

Question: Annealing ofwhite cast iron produces __________ iron.
[A].

grey

[B].

nodular

[C].

malleable

[D].

spheroidal

Answer: Option C

Explanation:

No answer description available for this question.

Question: Optical activity is a/an __________ property.
[A].

additive

[B].

constitutive

[C].

both (a) & (b)

[D].

neither (a) nor (b)

Answer: Option C

Explanation:

No answer description available for this question.

Question: Multistage compression of air as compared to single stage compression offers the advantage of
[A].

power saving per unit weight of air delivered.

[B].

moisture elimination in the inter-stage cooler.

[C].

increased volumetric efficiency.

[D].

all (a), (b) & (c).

Answer: Option D

Explanation:

No answer description available for this question.

Question: ‘Ice point’ is designated on Farenhite temperature scale by
[A].

0°

[B].

32°

[C].

62°

[D].

212°

Answer: Option B

Explanation:

No answer description available for this question.