S. 115JB : Book profit-Statement of accounts drawn in accordance with Companies Act-Disallowance under Income-Tax Act cannot be exporting for computation of book profits-Provision for doubtful trade receivables and advances debited to Profit and Loss Account-Writing off sum from its trade receivables in balance-sheet-Sum loses character of provision-No adjustment Called for-No adjustment on account of corporate Social responsibility expenses and donations-Provision for taxes made by Companies with whom assessee amalgamated-Reversal of unutilised provision for taxes in current Year-Matter remanded for verification-Debenture redemption reserve-Appropriation of profits and not provision for ascertained liability.