Specified debentures under tax exemption designated; secured redeemable bonds by Indian Telephone Industries and NTPC identified. Designates specified debentures as eligible under clause (ii) of sub section (1) of section 80L of the Income tax Act, naming (i) the 7 Year '14 per cent. Secured Redeemable Non convertible Bonds (A Series)' issued by M/s. Indian Telephone Industries Limited, Bangalore, in 1986, and (ii) the 7 Year '14 per cent. Secured Redeemable National Thermal Power Corporation Bonds-1986-1st series' as the debentures specified for the purposes of that clause.