SENTHIL, IT IS NOT ONE OF THE NATIONAL LANGUAGES. ITS ONLY THE NATIONAL LANGUAGE. IT IS YOUR FAULT THAT YOU DONT KNOW HINDI, AND IN YOUR PLACE NOBODY SPEAK IT. EVEN IN OTHER PLACES ALSO, PEOPLE TO WHOM HINDI IS NOT THE MOTHER TOUGUE, WILL NOT SPEAK HINDI EACH OTHER. BUT PEOPLE, AROUND 50%, WILL UNDERSTAND IT. ONLY IN TAMILNADU THIS IS NOT HAPPENING. AND EVERYBODY KNEW THAT TAMIL IS THE MOST WORST LANGUAGE IN THE WORLD. TAMIL NADU IS NOT A SEPARATE COUNTRY. AND I HAVE SEEN MANY TAMILIANS, STAMMERING HINDI ALL OVER THE NORTHERN PART OF INDIA. AS A PROUD CITIZEN OF INDIA, EVERYBODY SHALL LEARN TO SPEAK HINDI AS IT IS OUR NATIONAL LANGUAGE.