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One of the constituent of German silver is (a) \(\mathrm{Ag}\) (b) \(\mathrm{Cu}\) (c) \(\mathrm{Mg}\) (d) \(\mathrm{Al}\)

Short Answer

Expert verified
The correct answer is (b) Cu.

Step by step solution

01

Understanding German Silver

German silver, also known as nickel silver, is an alloy consisting primarily of copper, nickel, and zinc. It does not contain silver (Ag) despite its name.
02

Identifying the Elements in the Options

The provided options are (a) Ag, which is silver. (b) Cu, which is copper. (c) Mg, which is magnesium. (d) Al, which is aluminum.
03

Matching German Silver Components to Options

From the constituent elements of German silver (copper, nickel, and zinc), we check which matches. In the options provided, copper (Cu) is a component of German silver.
04

Determining the Correct Answer

Since copper is a recognized component of German silver, and option (b) corresponds to copper, option (b) is the correct choice.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Copper in Alloys
Copper is a key metal used in various alloys. An alloy is a mixture of metals that yields properties superior to their individual components. Copper's inclusion in alloys significantly impacts its characteristics. For example:
  • It improves electrical conductivity, making it valuable in electrical applications.
  • Copper imparts a reddish-gold hue, influencing the aesthetic value of the alloy.
  • It enhances corrosion resistance, protecting the metal from various environmental factors.
Including copper in alloys like bronze (copper and tin) and brass (copper and zinc) has revolutionized industries from construction to art. It's fascinating how copper's flexibility and conductivity make it indispensable in modern-day applications. Moreover, in German silver, it serves to partially dictate the alloy's final properties. Understanding these roles can help in comprehending why copper is so frequently chosen as a component in various metal mixtures.
Nickel Silver
Nickel silver, often confused with containing real silver, is an alloy composed of mainly copper, nickel, and zinc. Despite its name, it contains no elemental silver. Here's what makes nickel silver unique:
  • Its silvery appearance: The addition of nickel gives the alloy an attractive luster similar to silver, making it popular for decorative items.
  • Durability: With a hardness that can rival stainless steel, nickel silver is durable, useful in manufacturing cutlery, musical instruments, and marine hardware.
  • Corrosion resistance: Although not as resistant as pure metals like gold, nickel silver has a respectable level of resistance to tarnishing and corrosion.
Nickel silver is loved for its aesthetic appeal and mechanical properties. While not a substitute for silver, its affordability and strength make it a preferred choice for non-precious metal applications.
Chemistry of Alloys
The chemistry of alloys deals with the mixture of metals, resulting in compounds or solutions that exhibit unique physical and chemical properties. Creating an alloy involves combining metals in specific proportions to enhance certain traits:
  • Thermal resistance: Many alloys are crafted to withstand high temperatures without degrading.
  • Improved strength: Alloys often surpass pure metals in terms of tensile strength and hardness.
  • Modifiable melting points: By adjusting the proportions of its constituents, the melting point of an alloy can be tailored to specific needs.
  • Aesthetic variety: Different combinations result in varied colors and finishes for decorative purposes.
Nickel silver is a prime example, where the mixture of copper, nickel, and zinc gives it unique qualities. The study of alloys is crucial in material science as it enables the customization of metal properties for myriad uses across industries. Recognizing the role of chemistry in alloy production assists in predicting changes in alloy behavior, ensuring they meet specific application needs.

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Most popular questions from this chapter

An acidified solution of potassium chromate was layered with an equal volume of amyl alcohol. When it was shaken after the addition of \(1 \mathrm{~mL}\) of \(3 \% \mathrm{H}_{2} \mathrm{O}_{2}\), a blue alcohol layer was obtained. The blue color is due to the formation of a chromium (VI) compound ' \(\mathbf{X}\). What is the number of oxygen atoms bonded to chromium through only single bonds in a molecule of \(\mathbf{X}\) ?

The incorrect statement is : (a) Manganate and permanganate ions are tetrahedral (b) In manganate and permanganate ions, the \(\pi\)-bonding takes place by overlap of \(p\)-orbitals of oxygen and \(d\)-orbitals of manganese (c) Manganate and permanganate ions are paramagnetic (d) Manganate ion is green in colour and permanganate ion is purple in colour

Fusion of \(\mathrm{MnO}_{2}\) with \(\mathrm{KOH}\) in presence of \(\mathrm{O}_{2}\) produces a salt \(W\). Alkaline solution of \(W\) upon electrolytic oxidation yields another salt\(X\). The manganese containing ions present in \(\mathrm{W}\) and \(X\), respectively are \(Y\) and \(Z\). Correct statement(s) is (are) (a) In both \(Y\) and \(Z\), p-bonding occurs between \(p\)-orbitals of oxygen and \(d\) orbitals of manganese (b) In aqueous acidic solution, \(Y\) undergoes dispro-portionation reaction to give \(Z\) and \(\mathrm{MnO}_{2}\) (c) Both \(Y\) and \(Z\) are coloured and have tetrahedral shape (d) \(Y\) is diamagnetic in nature while \(Z\) is paramagnetic

The transition metal ions responsible for colour in ruby and emerald are, respectively: (a) \(\mathrm{Co}^{3+}\) and \(\mathrm{Cr}^{3+}\) (b) \(\mathrm{Co}^{3+}\) and \(\mathrm{Co}^{3+}\) (c) \(\mathrm{Cr}^{3+}\) and \(\mathrm{Cr}^{3+}\) (d) \(\mathrm{Cr}^{3+}\) and \(\mathrm{Co}^{3+}\)

Ammonium dichromate is used in some fireworks. The green coloured powder blown in the air is (a) \(\mathrm{CrO}_{3}\) (b) \(\mathrm{Cr}_{2} \mathrm{O}_{3}\) (c) \(\mathrm{Cr}\) (d) \(\mathrm{CrO}\left(\mathrm{O}_{2}\right)\)

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