Question

JEE ADVANCED CHEMISTRY QUESTION SEPTEMBER 2020

Answer 1

In 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 pain with X is either upwards (figure II), or deflected downwards (figure III) , depending on the compound X.

identify the correct statement (s).

solution : we know, paramagnetic compounds are attracted towards magnetic field and the pan is deflected downwards.

while diamagnetic compounds are repelled by magnetic field and the pan is deflected upwards.

here, H₂O is diamagnetic compound so deflection of the pan is upwards. option (A) is correct

K₄[Fe(CN)6 ] is diamagnetic compound so deflection of the pan is upwards , option (B) is also correct choice.

O₂ is paramagnetic compounds so the deflection of pan is downwards, option (C) is correct.

C6H6 (benzene) is diamagnetic compound so the deflection of pan is upwards , option (D) is incorrect.

Therefore options (A), (B) and (C) are correct choices.