Approval under section 35(1)(ii) grants research-institution status with annual reporting, accounting and prior renewal conditions. Approval of the Indian Copper Development Centre, Calcutta as an Institution under section 35(1)(ii) is subject to maintaining a separate account for research funds, furnishing annual returns of scientific research activities by 31st May, submitting audited accounts and balance sheet to the prescribed authority and tax authorities by 30th June, and applying for extension of approval at least three months before expiry.