I thnk the reply of Mr.vishal is quite satisfactoy to Mr.Nitn. However, I do not think why Mr.Nitin is so worry about TDS. TDS is a prepaid tax, which is a statutory provision of Government of Indian. it is clear thatt Mr.Nitin a government servent because he got the arrear of 6th Pay arrear. He got salay from the government treasury. If any TDS would be deducted by bank towards interest accuable from fixed deposit, that amount will be adjusted to the tax payable in respective year otherwise the amount of TDS will be refunded to the assessee with interest. If any tax payable by any person that will finaly go to the government treasury from which a government servant get payment in form of salary. It is not expected from a government servant to worry about so much.
Regarding 15H form, it is not applicable to Mr. Nitin because he is getting salary in this FY more than Rs.1.5 Lakh (known from arrear amount). Fom 15H is applicable to that person who has a below taxable income during a FY.