Question

how is the mayor of a city corporation elected

Answer 1

The Mayor is the head of the municipal corporation, but in most states and territories of India the role is largely ceremonial as executive powers are vested in the Municipal Commissioner. ... The tenure of the Mayor and Deputy Mayor is five years.

Answer 2

Question : How is the mayor of a city corporation elected

He/she  chosen through indirect election by the councillors from among themselves for a term of one year, which is renewable.

The Mayor executive authority.

For example ,

The last mayor selected  of Mumbai is Vishwanath Mahadeshwar.

(2017–present)

Thanks for the question.