Chemistry Transition Elements ETEA 2022
PMDC Verified Question 32 of 68
What is the composition of alloy, German silver?
A
\( Cu + Zn + Ni \)
B
\( Cu + Ag + Ni \)
C
\( Cu + Sn + Zn + Ni \)
D
\( Al + Cu + Mg + Mn \)
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: \( Cu + Zn + Ni \)
Concept:

German silver (also known as Nickel silver) is an alloy named for its silvery appearance, despite containing absolutely no elemental silver (Ag).

Solution:

  • German silver is a mixture composed primarily of Copper (Cu), alloyed with Zinc (Zn) and Nickel (Ni).


  • A typical formulation is approximately 50-60% copper, 20% zinc, and 20% nickel.


  • The nickel contributes the bright, silvery shine, while the zinc lowers the melting point and increases strength.


Why other options are incorrect:

  • Option B: Contains Ag (Silver). German silver does not contain silver.


  • Option D: This is the composition of Duralumin, a lightweight aluminum alloy.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

Previous Question All Transition Elements MCQs Next Question

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.

Enter Arena Sprint iOS App Android App