Thank you for reporting, we will resolve it shortly
Q.
For which of the following molecules $\Delta \mu \neq 0$
NTA AbhyasNTA Abhyas 2020Chemical Bonding and Molecular Structure
Solution:
$-OH$ Group and $-S-H$ group have not linear geometries so they cannot cancel each other and net dipole moment is positive. Hence III and IV polar, in I and II $\mu $ cancel each other so $\mu _{n e t}$ is zero and they are non-polar.
