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D and F Block Elements question

2025 · 23 Jan · Shift 2 · Q3
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D and F Block Elements question

2025 · 23 Jan · Shift 2 · Q3

JEE MainChemistryD and F Block ElementsMCQ+4 / −1

Match List - I with List - II

List - I List - II
(A) Bronze (I) Cu, Ni
(B) Brass (II) Fe, Cr, Ni, C
(C) UK silver coin (III) Cu, Zn
(D) Stainless steel (IV) Cu, Sn

Choose the correct answer from the options given below :

  1. A
    (A)-(IV), (B)-(II), (C)-(III), (D)-(I)
  2. B
    (A)-(IV), (B)-(III), (C)-(I), (D)-(II)
  3. C
    (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
  4. D
    (A)-(III), (B)-(IV), (C)-(II), (D)-(I)
View written solutionFree

Correct answer: B

  1. Identify the composition of each alloy/material

    We match each item in List-I with its known constituents in List-II.

    • Bronze is an alloy of copper and tin. ⇒Bronze→Cu, Sn\Rightarrow \text{Bronze} \to \text{Cu, Sn}⇒Bronze→Cu, Sn So, A→(IV)A \to (IV)A→(IV)

    • Brass is an alloy of copper and zinc. ⇒Brass→Cu, Zn\Rightarrow \text{Brass} \to \text{Cu, Zn}⇒Brass→Cu, Zn So, B→(III)B \to (III)B→(III)

    • UK silver coin is made of copper and nickel. ⇒UK silver coin→Cu, Ni\Rightarrow \text{UK silver coin} \to \text{Cu, Ni}⇒UK silver coin→Cu, Ni So, C→(I)C \to (I)C→(I)

    • Stainless steel contains iron, chromium, nickel, and carbon. ⇒Stainless steel→Fe, Cr, Ni, C\Rightarrow \text{Stainless steel} \to \text{Fe, Cr, Ni, C}⇒Stainless steel→Fe, Cr, Ni, C So, D→(II)D \to (II)D→(II)

  2. Final matching

    A−(IV),  B−(III),  C−(I),  D−(II)A-(IV),\; B-(III),\; C-(I),\; D-(II)A−(IV),B−(III),C−(I),D−(II)

  3. Compare with options

    This corresponds to Option B.

  4. Comparison with stored correct answer

    Stored correct answer = B

    Derived answer = B

    Hence, they agree.

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