Tax-exempt bonds: registration with the issuer required to secure exemption on specified corporate redeemable non-convertible bonds. The Central Government specifies 10-year secured, redeemable, non-convertible (B Series) bonds issued by Neyveli Lignite Corporation Limited as tax-free under the Income-tax Act, subject to the condition that the holder registers his name and the holding with the issuing corporation to be eligible for the exemption.