S. 245 : Refunds-Set off of refunds against tax remaining payable-Adjustment of refund against demand cannot be made when prior demand is not evidenced by a valid demand notice/intimation-Foreign tax credit-Petitioner was entitled to credit of foreign taxes paid/withheld in UK as reflected in Form-16, notwithstanding that claim was not separately entered under Relief under Section 90/91 field of return-Held, yes-Whether demand for Assessment Year 2010-11 was to be deleted and refund, if any, was to be granted. [S.90, 91, 143(1), 156, Art. 226]