Verified Solution • 2025–26 Session moderate

QJEEM21Ch137d: JEE Main 2021 Chemistry - Class 12 JEEM21Ch137d Solution: The major components in "Gun Metal” are :

The major components in "Gun Metal” are :

Multiple Choice Options

  • A Al, Cu, Mg and Mn
  • B Cu, Ni and Fe
  • C Cu, Sn and Zn
  • D Cu, Zn and Ni

Step-by-Step Verified Solution

Composition of Gun metal → 90% Cu + 8% Sn + 2% Zn

Note :

Alloys Composition
Brass 60% Cu + 40% Zn
Bronze 75-90% Cu + 10-25% Sn
Gun-metal 90% Cu + 8% Sn + 2% Zn
Aluminium bronze 90% Cu + 10% Al
Monel metal 30% Cu + 67% Ni + 3% (Fe + Mn)
German Silver 56% Cu + 24% Zn + 20% Ni
Manganin 78-86% Cu + 13-18% Mn + 1-4% Ni
Bell metal 80% Cu + 20% Sn
Constantan 60% Cu + 40% Ni

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