Question:

Paramagnetic substances:
A. align themselves along the directions of external magnetic field.
B. attract strongly towards external magnetic field.
C. has susceptibility little more than zero.
D. move from a region of strong magnetic field to weak magnetic field.
Choose the most appropriate answer from the options given below:

Updated On: Nov 3, 2025
  • A, B, C, D
  • B, D Only
  • A, B, C Only
  • A, C Only
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The Correct Option is D

Approach Solution - 1

To correctly answer this question about the properties of paramagnetic substances, let's break down each statement:

  1. Statement A: Align themselves along the directions of external magnetic field. 
    Paramagnetic substances have unpaired electrons that cause them to have a net magnetic moment. When placed in an external magnetic field, these substances tend to align themselves along the direction of the field. This statement is true.
  2. Statement B: Attract strongly towards external magnetic field. 
    While paramagnetic substances are attracted towards the magnetic field, they do not attract strongly. Strong attraction is a characteristic of ferromagnetic substances. Thus, this statement is false for paramagnetic substances.
  3. Statement C: Has susceptibility little more than zero. 
    The magnetic susceptibility \(\chi\) of paramagnetic materials is positive but small, meaning it is slightly more than zero. This property confirms that paramagnetic substances weakly respond to magnetic fields. Thus, this statement is true.
  4. Statement D: Move from a region of strong magnetic field to weak magnetic field. 
    Paramagnetic substances tend to move from a region of weak magnetic field to a region of strong magnetic field, not the other way around. Therefore, this statement is false.

Based on the above analysis, statements A and C are correct. Therefore, the most appropriate answer is A, C Only.

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Approach Solution -2

Paramagnetic substances exhibit the following characteristics:
Align themselves along the direction of an external magnetic field due to unpaired electrons.
Are weakly attracted to an external magnetic field.
Possess a magnetic susceptibility \( \chi > 0 \), but it is small and positive.
Do not move from strong to weak fields (this is a property of diamagnetic substances).
Final Answer: A, C only

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