Stamp duty and registration charges on power of attorney, eligible for tax benefit under 80c?

Hi, 

I am a Salaried employee from TamilNadu. I am planning to get a home loan. I have below queries.

1. To approve home loan will the banks ask for Power of attorney?
2. If yes, will the Power of attorney involve Stamp duty and Registration charges?
3. If yes, Stamp duty and Registration charges on Power of attorney, eligible for tax benefit under 80C? 

Thanks,

Manoj