JEE Main · 2020 · 06 Sep 2020 · Shift 1 · d and f Block Elements

The INCORRECT statement is:

(A)bronze is an alloy of copper and tin
(B)cast iron is used to manufacture wrought iron
(C)german silver is an alloy of zinc, copper and nickel
(D)brass is an alloy of copper and nickel.✓ Correct

Answer: (D)

Solution

Checking each alloy: bronze is indeed copper with tin, cast iron is the starting material from which wrought iron is made, and german silver is the copper-zinc-nickel alloy. Brass, however, is an alloy of copper and zinc, not copper and nickel (the copper-nickel alloy is cupronickel), so the statement calling brass an alloy of copper and nickel is the incorrect one.

JEE Main · 2020 · 06 Sep 2020 · Shift 1 · Single correct option

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