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Match List-I with List-II.

List-I (Material) (A) Diamagnet (B) Paramagnet (C) Soft ferromagnet (D) Hard ferromagnet

List-II (Example) (I) Alnico (II) Copper (III) Aluminium (IV) Gadolinium

Choose the correct answer from the options given below:

A

A-I, B-II, C-III, D-IV

B

A-IV, B-III, C-II, D-I

C

A-III, B-II, C-I, D-IV

D

A-II, B-III, C-IV, D-I

Step-by-Step Solution

  1. Diamagnetic Materials (A): These materials are weakly repelled by magnetic fields. Copper (II) is a classic example of a diamagnetic substance (along with water, bismuth, etc.).
  2. Paramagnetic Materials (B): These materials are weakly attracted by magnetic fields. Aluminium (III) is a standard example of a paramagnetic substance (along with sodium, calcium, etc.).
  3. Hard Ferromagnets (D): These materials have high coercivity and retentivity, making them suitable for permanent magnets. Alnico (I) (an alloy of Aluminium, Nickel, and Cobalt) is a well-known hard ferromagnetic material.
  4. Soft Ferromagnets (C): These materials have low coercivity and are easily demagnetized. By elimination in this specific list, Gadolinium (IV) is matched here (Gadolinium is a ferromagnetic lanthanoid with a Curie temperature near room temperature).

Conclusion: The correct matching is A-II, B-III, C-IV, D-I.

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