The correct answer is option 3. A(II), B(III), C(IV), D(I).
Let us delve into the details of each alloy and its constituents:
A. Brass:
Constituents:Copper + Zinc
Explanation: Brass is an alloy primarily composed of copper and zinc. The proportions of copper and zinc can vary, resulting in different types of brass with varying properties. Brass is known for its malleability, corrosion resistance, and attractive yellowish color. It finds applications in a wide range of products, including musical instruments, decorative items, and plumbing fittings.
B. German Silver:
Constituents: Copper + Zinc + Nickel
Explanation: German Silver, also known as nickel silver, is an alloy of copper, zinc, and nickel. Despite its name, German Silver does not contain silver. It is a white or silver-colored alloy with good corrosion resistance. German Silver is commonly used in the production of coins, silverware, and musical instruments.
C. Coinage Alloy:
Constituents: Copper + Nickel
Explanation: Coinage alloy is an alloy of copper and nickel. This combination is commonly used in the minting of coins due to its durability, resistance to corrosion, and the ability to maintain a shiny appearance over time. Nickel imparts certain desirable characteristics, making the coins resistant to wear and tarnish.
D. Bronze:
Constituents: Copper + Tin
Explanation: Bronze is an alloy primarily composed of copper and tin. The proportion of tin can vary, leading to different types of bronze with distinct properties. Bronze is known for its strength, durability, and historical significance. It has been widely used in the production of sculptures, tools, weapons, and musical instruments.
In summary:
Brass (A) is copper + zinc.
German Silver (B) is copper + zinc + nickel.
Coinage Alloy (C) is copper + nickel.
Bronze (D) is copper + tin.
The correct match is (3) A(II), B(III), C(IV), D(I). |
