Materials and Construction

Question: Brass container is suitable for storing
[A].

aqueous ammonia

[B].

beer

[C].

H2SO4(95%)

[D].

phosphoric acid (95%)

Answer: Option B

Explanation:

No answer description available for this question.

Question: Aluminium storage vessel can be used to store
[A].

aqua regia

[B].

ferrous sulphate

[C].

hydrochloric acid (10%)

[D].

none of these

Answer: Option D

Explanation:

No answer description available for this question.

Question: H2SO4 (< 50% concentration) is corrosive to
[A].

aluminium, mild steel, stainless steel, concrete & tin.

[B].

copper, cast iron & high silicon iron (14% Si).

[C].

rubber (butyl and hard), silicone rubber & teflon.

[D].

glass, graphite, porcelain & stoneware.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Mild steel is
[A].

a low carbon steel (0.05 to 0.3% carbon).

[B].

highly resistant to corrosion (as much as stainless steel).

[C].

a high carbon steel (0.5 to 1.5% carbon).

[D].

very poor in strength & ductility.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Wrought iron is
[A].

high carbon iron.

[B].

highly resistance to acid corrosion.

[C].

malleable & ductile; and hence is used for chain links, hooks & couplings.

[D].

an alloy of iron, chromium & carbon.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Ability of a material to absorb energy in deformation in the plastic range is characterised as its
[A].

ductility

[B].

toughness

[C].

creep

[D].

resilience

Answer: Option B

Explanation:

No answer description available for this question.

Question: Hastelloy comprises of
[A].

copper and tin

[B].

copper and nickel

[C].

molybdenum and nickel

[D].

lead and tin

Answer: Option C

Explanation:

No answer description available for this question.

Question: Inconel is an alloy of
[A].

tin, zinc and nickel

[B].

iron, nickel and chromium

[C].

copper and nickel

[D].

copper and tin

Answer: Option B

Explanation:

No answer description available for this question.

Question: Bell metal is an alloy of
[A].

copper & zinc

[B].

copper & tin

[C].

copper & nickel

[D].

zinc & tin

Answer: Option B

Explanation:

No answer description available for this question.

Question: An alloy of iron containing 4% carbon is called
[A].

high carbon steel

[B].

wrought iron

[C].

mild steel

[D].

none of these

Answer: Option D

Explanation:

No answer description available for this question.