Tax exemption under section 10(23C)(iv) notified, recognizing Sankat Nivaran Society's status for specified assessment years. Central Government issued a statutory notification declaring Sankat Nivaran Society, Gujarat covered by clause (iv) of sub section (23C) of section 10 of the Income tax Act, for the specified assessment years, thereby recognizing the Society under the Income tax notification power and specifying the temporal scope of that recognition.