The maximum percentage of chromium that can be added to steel is about____________________?

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: Invar contains the highest percentage of
[A].

vanadium

[B].

iron

[C].

tungsten

[D].

cobalt

Answer: Option B

Explanation:

No answer description available for this question.

Question: Ceramic recuperators are generally made of
[A].

silicon carbide.

[B].

calcium carbide.

[C].

fireclay bricks.

[D].

high alumina bricks.

Answer: Option A

Explanation:

No answer description available for this question.

Question: An ideal material of construction for the storage of 50% caustic soda solution would be
[A].

karbate

[B].

high silicon cast iron

[C].

monel

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.