Research exemption approval under section 35(1)(ii) requires separate research accounts, annual scientific returns, and timely renewal filings. Approval was granted to M/s Madras Diabetes Research Foundation as an Association for research-related income tax deduction, subject to maintaining separate research accounts, furnishing an annual scientific research return to the Department of Scientific & Industrial Research by the annual deadline, and submitting audited annual accounts and audited income and expenditure accounts for research activities to the designated income tax exemption offices, the Department, and the local tax authorities by the prescribed annual deadline in addition to filing its income tax return.