Question

Match List - I with List - II. 

Choose the correct answer from the options given below : 
 

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

Hint:

Bismuth is strongly diamagnetic and is a classic textbook example. Alnico literally stands for ALuminium, NIckel, and CObalt; it is one of the most famous ferromagnetic alloys used in guitar pickups and strong magnets.

Answer 1

The Correct Option is C

Step 1: Concept:
This question requires classifying various materials and alloys into their correct magnetic and electronic property categories.

Step 2: Step-by-step Explanation:

• A. Diamagnetic Materials: These materials create an induced magnetic field in a direction opposite to an externally applied magnetic field, and are repelled by the applied magnetic field. Common examples include water, noble gases, and metals like Bismuth, Copper, and Lead. (A $\rightarrow$ III)

• B. Paramagnetic Materials: These materials are weakly attracted by an externally applied magnetic field due to the presence of unpaired electrons. Common examples include alkali and alkaline earth metals like Aluminium, Sodium, and Calcium. (B $\rightarrow$ I)

• C. Ferromagnetic Materials: These materials can form permanent magnets and are strongly attracted to magnetic fields. Iron, Cobalt, Nickel, and their alloys are ferromagnetic. Alnico is a famous family of iron alloys (with Al, Ni, and Co) used to make powerful permanent magnets. (C $\rightarrow$ IV)

• D. High temperature superconductors: These are typically complex ceramic oxide materials (cuprates or titanates/bismuthates) that exhibit superconductivity at temperatures significantly above absolute zero compared to traditional metallic superconductors. The complex oxides listed ($SrTiO_{3-x}, LiTi_2O_4, Ba(Pb, Bi)O_3$) are all well-known superconducting oxides. (D $\rightarrow$ II)
The complete matching sequence is A-III, B-I, C-IV, D-II.

Step 3: Final Answer:
This sequence exactly matches option (C).