The major components in "Gun Metal" are:
- (A) and Mn
- (B) and Zn✓ Correct
- (C) and Ni
- (D) and Fe
Answer: (B)
Solution
Gun metal is an alloy primarily composed of copper (Cu), tin (Sn), and zinc (Zn).
The typical composition is:
Gun metal was historically used for making cannons and guns due to its:
It is a type of bronze alloy (copper-tin based) with added zinc for improved properties. The other options represent different alloys: option (1) contains aluminum and magnesium (not typical for gun metal), option (3) describes brass-type alloys, and option (4) describes nickel-iron alloys.
The typical composition is:
- Copper: 85-90%
- Tin: 8-10%
- Zinc: 2-4%
Gun metal was historically used for making cannons and guns due to its:
- High strength and hardness
- Good resistance to corrosion, especially in marine environments
- Excellent casting properties
- Ability to withstand high pressures
It is a type of bronze alloy (copper-tin based) with added zinc for improved properties. The other options represent different alloys: option (1) contains aluminum and magnesium (not typical for gun metal), option (3) describes brass-type alloys, and option (4) describes nickel-iron alloys.
JEE Main · 2021 · 24 Feb 2021 · Shift 1 · Single correct option