Q7 / 54 · JEE Advanced 2020 (Paper 2) · Chemistry

In an experiment, m grams of a compound X (gas/liquid/solid) taken in a container is loaded in a balance as shown in figure I below. In the presence of a magnetic field, the pan with X is either deflected upwards (figure II), or deflected downwards (figure III), depending on the compound X. Identify the correct statement(s).

 Figure

  • Correct answer
    A
    If X is H2O(l), deflection of the pan is upwards.
  • Correct answer
    B
    If X is K4Fe(CN)6(s), deflection of the pan is upwards.
  • Correct answer
    C
    If X O2(g),deflection of the pan is downwards.
  • D
    If X is C6H6(l), deflection of the pan is downwards

Solution

Paramagnetic substance attracted by magnetic field so magnetic balance show downward deflection.
While diamagnetic substance show repulsion in magnetic field show magnetic balance show upward
deflection.

  Compound Magnetic Nature Deflection
(a) H2O Diamagnetic Upward
(b) K4Fe(CN)6 Diamagnetic Upward
(c) O2(g) Paramagnetic Downward
(d) C6H6 Diamagnetic Upward

 

Hence, the correct answer is options: 'A', 'B', 'C'.

Relevant Questions