Exemption for receipts on behalf of Gujarat Pollution Control Board preserved when statutory application, investment, business and dissolution conditions are met. Exemption under Section 10(23C)(iv) excludes from a recipient's taxable income receipts made on behalf of the Gujarat Pollution Control Board, subject to conditions: income applied or accumulated exclusively for institutional objects with limited accumulation above fifteen percent; restricted modes of investment for funds; exclusion of business receipts unless incidental and separately accounted; regular filing of income-tax returns; and transfer of surplus and assets to a like-minded organization on dissolution. The notification covers only receipts made on behalf of the institution and not other recipient income.