Taxation on sale of Residential Plot

My son bought a residential land in FY 2009-10.

He did a settlement of the same residential land to my name, through a SETTLEMENT DEED ( SON - to - MOTHER) in November FY 2017-18.

The value of the residential land mentioned in the SETTLEMENT DEED is 10,00,000/- INR.

I sold the same residential land in Feb FY 2017-18 through SALE DEED for INR 10,00,000/- INR

I am a senior citizen woman aged 65 years. I have no other source of Income. 

Should I need to pay Income Tax on the 10,00,000 /- INR , which is the value I received after selling the residential land.

Should I pay any capital gains tax on the same ? If so, how much.

Please advise. Thank you.