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State if the statement is true or false:
German silver is an alloy of copper and zinc but brass is an alloy of iron and zinc.

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True

False

answer is B.

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Detailed Solution

Alloys are mixture of two or more elements. They are also called solid solutions.

The composition of various alloys is-

Alloy	Composition
Brass	Cu + Zn
Bronze	Cu +Sn
Stainless steel	Fe +Cr + Ni + C
Solder	Pb + Sn
German silver	Cu + Zn + Ni

German silver is an alloy of copper, nickel, and zinc with variable composition. The approx. percentage of each element in German silver is-

Copper - 50% to 61.6%;
Zinc - 19% to 17.2%
Nickel - 30% to 21.1%.

Brass is an alloy of copper and zinc. Copper is present in 64 % and zinc in 36%.

Thus, the given statement is FALSE as brass is not an alloy of iron.

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