CHEMICAL ENGINEERING

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.

Question: With increase in compression ratio, the volumetric efficiency of air compressor
[A].

increases.

[B].

decreases.

[C].

remains same.

[D].

may increase or decrease (depends on the suction pressure).

Answer: Option A

Explanation:

No answer description available for this question.

Question: ‘End cooler’ or ‘after cooler’ is employed in air compressor mainly to
[A].

remove oil vapour or moisture from air.

[B].

cool the dry air before use.

[C].

reduce the volumetric capacity of receiver.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Capacity & power requirement for an air compressor working at high altitude compared to sea-level will be
[A].

more

[B].

less

[C].

same

[D].

either more or less; depends on the climatic conditions.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Metallic surveying tapes are made of __________ which has a low co-efficient of expansion & enough strength.
[A].

invar

[B].

hastealloy

[C].

duralumin

[D].

monel metal

Answer: Option A

Explanation:

No answer description available for this question.