Income exemption for institution receipts under section 10(23C)(iv) applies subject to conditions on application, investment and dissolution. Exemption excludes from taxable total income any amounts received by persons on behalf of the Bureau of Indian Standards for the assessment years 2004-2005 to 2006-2007, subject to conditions: income must be applied or accumulated for institutional objects with limited accumulation, investments limited to specified modes, business income taxable only if not incidental and separately accounted, regular filing of returns, and transfer of surplus and assets on dissolution to a like organisation; the notification applies only to recipients of income on behalf of the Institution and not to other receipts of such recipients.