NSC - Interest earned is tax free or not?

[White Caps]

1- Whether the interest earned is tax free or not?
2- Can you please clarify me on that?
3- Is Minimum term of certificate 6 yrs?

- Yes, Income tax relief is also available on the interest earned as per limits fixed vied section 80C.
- Period of maturity of a certificate is six Years.

2- Can you please clarify me on that

I think it is with first query.