80tta deduction...

Yes it available.
you may also know that 80tta is avlbl. for banks, cooperative banks and post office savinds deposit account

Yes the deduction is available

YES available .. eligible for 80TTA 

An individual can claim for deduction on interest income of up to Rs 10,000 per annum under this section. It is available for both individuals as well as Hindu Undivided Family.
No TDS is deducted on either Time Deposit (FD) or Recurring Deposit (RD) made with a post office. Senior Citizens (those above 60) can get up to Rs 50,000 per year in FD interest tax-free and no TDS will be deducted for interest received up to Rs 50,000 per annum for them.

Yes, of course