Income tax on sale of land - planning

I'm a salaried employee in a private ltd firm. My total salary is 4.5 lakh/annum and I have deposits like PPF, NSC, etc so as to avoid paying income tax. But, in this FY I received 10 lakh as my share by the sale of land which was on my mother's name, and I deposited it as FDs in SBT and Canara bank.

So, please tell me the best way/investments to avoid paying income tax. I've no other incomes.