Dear Sir,
Any surplus generated due to these types of income is not chargeable to tax as it is exempt based on the ‘concept of Mutuality’.
However, there may be some other incomes which are taxable like income earned on investing the surplus in stock markets etc., rental Income from Advertisement Hoardings etc.
Please feel free to revert in case of any doubts.
Thanks and Regards,
CA Abhishek Dugar