Fixed deposits TAX problems?

Hi my Yealy income is 600000 (Salary) and i am tax payer.
i am looking to make an FD of 5 lackh.

1) what are the tax Implication if i invest as FD like
2) is FD intrest is taxable ?
3) if the intrest is taxable what is the percentage?
4) is there any best way to save tax, actually i an looking to increase the monthly income.

Thank you.