Whether alimony to be paid by a pensioner to his wife who is also getting pension?

I am retired central government employee. My wife was also working in the same office. She took voluntary retirement. She is getting pension of around Rs.31000/-. I am getting a pension of around Rs.51,000/-. I built a house in Bangalore taking loan from my office and from bank also. Because of wife's harassment for transferring the house in my elder son's name I transferred the house to him as a gift. Now she is claiming alimony from me. My elder son is 25 years old and he is working as software engineer in Bangalore. My second son is 21 year old who is final year engineering. Myself and my wife is living separately. She is staying with my sons kiin the house gifted by me (forcibly made me to gift the house). In this case whether I should pay alimony from my pension to my wife who is also getting pension? Whether I have to pay any amount from my retirement benefits? Her retirement benefits and the share amount of her father's property are kept in fixed deposits in her name. I don't have any house to stay. I have to purchase from my retirement benefit. Kindly advice, Sir.