@ Ranjit Singh..........
1. I claimed Rs.1250 per month as electricity expense for my computers. Since I do not pay bill separately, will the ITO reject this expense?
Ans: Depending upon the total bill amount, some reasonable expenses allowed.
2. I have a Postpaid broadband connection required for work. I have missing receipts for 3 months but I have claimed the expense, will the ITO reject this expense?
No, if the amount is paid through banking channel
3 I have received a sum of Rs. 72000 into my bank account from my father(overseas worker) which I did not show as income. but now I have lost the receipt of transaction, will the ITO add this to my income?
No but confirmation from your father with his bank passbook or statements will be sufficient
4. I have take and give transactions totaling Rs 20000, will the ITO consider this as income?
Depends upon your justification/s
5. I have Rs. 23000 Net loss from equity trading which I dectucted as expense. Is this right?
Its not expenses, but adjustment of loss from one business from another business/profession is possible.
This is little bit lengthy and 'boring' process...... better hire a local experienced CA or consultant....... and get relieved from the tension.....