Question

what is the role of Zamindar in Mughal administration

Answer 1

Its role was to collect taxes from the area which was given to that particular zamidar and give that tax to the governer so that the governer could further give that tax to the king.

For knowing it in more detail I would advise you to read the 4 chapter of history ncert class 7 textbook. 

Answer 2

Answer:

They collected taxes from the peasants and gave them to the Mughal emperor. Thus, they played the role of intermediaries. In some areas the zamindars became more powerful. The exploitation by Mughal administrators made them to rebellion.