Question

Either maya or neha is/are respinsoble for this

Answer 1

Either Maya or Neha is responsible for this.

Answer 2

Given question:  

Either Maya or Neha is/are responsible for this

The correct answer for the question is as follws:

Either Maya or Neha is responsible for this.

This is because “either” represents any one of the two or more. Here, either Maya or Neha is talked about. So instead of “are”, the verb will be “is”, as a single person is denoted in the question.