In Tamil, the word 'nadu' means the land; so Tamil Nadu means land of people who talks the tamil language
In India. It is in the southern end part of India. Having population of 6 Crores. Language is Tamil. (One of Six Classical Language of the world).
Velipuram
It has already been made compulsory in Tamilnadu
தமிழ்நாடு அரசு பணியாளர் தேர்வாணையம்[tamilnadu arasu paniyalar thervaanaiyam]