German silver used for decorative purposes contains maximum percentage of___________________?

Question: Bog iron used for the adsorption of H2S from coke oven gas is
[A].

an intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide).

[B].

iron impregnated with resin (usually bakelite).

[C].

carbon free iron.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: White cast iron as compared to grey cast iron is
[A].

more durable

[B].

very brittle

[C].

very hard

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.

Question: German silver in an alloy of
[A].

copper, nickel and zinc.

[B].

copper, aluminium and silver.

[C].

silver, zinc and aluminium.

[D].

silver, nickel and zinc.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Anodic material used for the cathodic protection of underground buried steel pipeline is
[A].

nickel or copper

[B].

zinc or magnesium

[C].

bronze

[D].

brass

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.