Question: German silver contains
[A].

70% copper and 30% zinc

[B].

60% copper and 40% zinc

[C].

59% copper, 40% zinc and 1% tin

[D].

60.45% copper, 35.2% zinc and 5.35% nickel

Answer: Option D

Explanation:

No answer description available for this question.

Question: Muntz metal (Yellow brass) contains
[A].

70% copper and 30% zinc

[B].

60% copper and 40% zinc

[C].

59% copper, 40% zinc and 1% tin

[D].

60.45% copper, 35.2% zinc and 5.35% nickel

Answer: Option B

Explanation:

No answer description available for this question.

Question: An alloy of copper, tin and zinc is known as
[A].

brass

[B].

bronze

[C].

gun metal

[D].

muntz metal

Answer: Option C

Explanation:

No answer description available for this question.

Question: Bronze is an alloy of
[A].

copper and zinc

[B].

copper and tin

[C].

copper, tin and zinc

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Cartidge brass can be
[A].

cold rolled into sheets

[B].

drawn into wires

[C].

formed into tube

[D].

any one of these

Answer: Option D

Explanation:

No answer description available for this question.

Question: The casting ability of aluminium increases when __________ is added to aluminium.
[A].

copper

[B].

magnesium

[C].

silicon

[D].

lead and bismuth

Answer: Option C

Explanation:

No answer description available for this question.

Question: The aluminium alloy made by melting aluminium with 2 to 10% magnesium and 1.75% copper is called
[A].

duralumin

[B].

Y-alloy

[C].

magnalium

[D].

hindalium

Answer: Option C

Explanation:

No answer description available for this question.

Question: Duralumin has better strength than Y-alloy at high temperature.
[A].

True

[B].

False

Answer: Option B

Explanation:

No answer description available for this question.

Question: Aluminium has low density and addition of silicon improves its fluidity and therefore, its castability.
[A].

Correct

[B].

Incorrect

Answer: Option A

Explanation:

No answer description available for this question.

Question: The aluminium alloy, mainly used, for anodized utensil manufacture, is
[A].

duralumin

[B].

Y-alloy

[C].

magnalium

[D].

hindalium

Answer: Option D

Explanation:

No answer description available for this question.