Thank you for reporting, we will resolve it shortly
Q.
The permanent displacement of electron through a chain involving only $\sigma$-bonds is called
Organic Chemistry – Some Basic Principles and Techniques
Solution:
The permanent displacement of electron through a chain involving only $\sigma$-bonds is called inductive effect. It involves the electron displacement along the chain of saturated carbon atoms due to the presence of a polar covalent bond at one end of the chain.