Materials and Construction

Question: For platinum thermocouples, lead wires are made of
[A].

copper & copper-nickel alloys.

[B].

copper & iron.

[C].

iron & nickel.

[D].

tin & nickel.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Constantan is an alloy of
[A].

Cu (55%) & Sn (45%).

[B].

Cu (55%) & Ni (45%).

[C].

Pt (95%) & Rh (10%).

[D].

Fe (80%) & Ni (20%).

Answer: Option B

Explanation:

No answer description available for this question.

Question: Dilute sulphuric acid is transported in __________ pipes.
[A].

mild steel

[B].

lead

[C].

copper

[D].

special alloys

Answer: Option B

Explanation:

No answer description available for this question.

Question: Ferric stainless steels compared to austenitic stainless steels
[A].

have lower corrosion resistance.

[B].

are harder to fabricate.

[C].

are less ductile and hence less suitable for cold pressing.

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.

Question: Evaporator used for concentrating tomato juice is made of
[A].

nickel

[B].

brass

[C].

stainless steel-glass lined

[D].

cast iron-rubber lined

Answer: Option C

Explanation:

No answer description available for this question.

Question: In the Contact process of sulphuric acid manufacture, 98% acid cooler is made of
[A].

stainless steel

[B].

cast iron

[C].

lead lined steel

[D].

rubber lined steel

Answer: Option B

Explanation:

No answer description available for this question.

Question: In the Kraft process of sulphate paper pulp manufacture, the black liquor and the white liquor storage tank is made of
[A].

concrete

[B].

wood

[C].

steel

[D].

porcelain

Answer: Option C

Explanation:

No answer description available for this question.

Question: Liquid ammonia is shipped in __________ containers.
[A].

steel

[B].

aluminium

[C].

glass

[D].

lead lined

Answer: Option C

Explanation:

No answer description available for this question.

Question: Carbon percentage in medium carbon steel is around
[A].

0.1 to 0.35

[B].

0.35 to 0.5

[C].

0.8 to 1.4

[D].

1 to 1. 5

Answer: Option B

Explanation:

No answer description available for this question.

Question: Low carbon steels are those in which carbon percentage is around
[A].

0.1 to 0.35

[B].

0.4 to 0.7

[C].

0.8 to 1.5

[D].

1.5 to 2

Answer: Option A

Explanation:

No answer description available for this question.