Dear Sir,
Please find the answer below:
1. Yes, Section 194IA requires a buyer of immovable property(more than 50 LAcs) to dedcut TDS @1%.
2. Yes, it will be eligible for indexation and long term capital gain.
3. If you invest sufficient amount in other residential house property, you will be eligible for deduction and will not require to pay capital gain tax subject to other consitions being satisfied.
4. Yes, buyer has to deducted TDS in any case.
5. Yes, you can claim the refund of TDS paid.
We shall be glad to help you in this regard.
Thanks and Regards,
CA Abhishek Dugar