Agriculture:
(i) Tamil Nadu, with seven agro-climatic zones and varied soil types, is better suited for the production of fruits, vegetables, spices, plantation crops, flowers and medicinal plants.
(ii) The State is the largest producer of loose flowers and the-third largest producer of fruits.
(iii) Tamil Nadu has historically been an agricultural State. At present, Tamil Nadu is the India's second-biggest producer of rice, next only to West Bengal.
(iv) The state is one of the major producers of turmeric. It is also the leading producer of Kambu, Com, Groundnut, Oilseeds and Sugarcane.
(v) It ranks first in production of plantation crops and banana and coconut, second in rubber and cashew nut, third in pepper and fourth in sugarcane.
(vi) The gross cropped area under all crops was 58.97 lakh hectares in the year 2013-14. The area under food crops account for 72.9% and that of non-food crops is 27.1%.
(vii) Among the food crops paddy takes a major share. Among the non-food crops, groundnut and coconut take a major share.
(viii) Net sown area has been gradually declining; and, rural land, labour and capital are moving towards urban projects. As a result, villages are emptied and cities are overcrowded and congested, leading to spatially unbalanced bulging.

Water Resources:
(i) Tamil Nadu is not endowed with rich natural resources compared "to other States".
(ii) It accounts for three per cent of water sources, four per cent of land area against six per cent of population.
(iii) North East monsoon is the major source of rainfall followed by South West monsoon.
(iv) There are 17 river basins in Tamil Nadu. The main rivers are Palar, Cheyyar, Ponnaiyar, Cauvery, Bhavani, Vaigai, Chittar, Tamiraparani, Vellar, Noyyal, Siruvani, Gundar, Vaipar, Valparai etc.
(v) Wells are the largest source of irrigation in Tamil Nadu (56%).

The Government is promoting industrial parks like Rubber Park, Apparel Park, Floriculture Park, TICEL Park for Biotechnology, Siruseri IT Park and Agro Zones. Tamil Nadu has a network of about 110 industrial parks/estates that offer developed plots with supporting infrastructure.
Types of Industries:
i) Textiles:
Tamil Nadu is the largest textile hub of India and also "Yarn Bowl" of the country accounting for 41% of India's cotton yarn production. The western part of Tamil Nadu comprising Coimbatore, Tiruppur, Erode, Dindigul and Karur has the majority of spinning mills manufacturing cotton/polyster blended yarn and silk yarn used by garment units in Tamil Nadu. Tiruppur known as "knitting city" is the exporter of garments worth USD 3 million. Erode is the main cloth market both retail and Wholesale market.
ii) Leather:
Tamil Nadu occupies for 30% of leather exports and about 70% of leather production in the country. Hundreds of leather and tannery industries are located around Vel/ore, Dindigul and Erode. Every year the state hosts the India International Leather Fair in Chennai.
iii) Electronics:
Chennai has emerged at EMS Hub of India. Many Multi-national companies have chosen Chennai as their South Asian manufacturing hub.
iv) Automobiles:
Chennai nicknamed as "The Detroit of Asia" is home to large number of auto component industries. Tamil Nadu has 28% share each in automotive and auto component industries, 19% in the trucks segment and 18% each in ' passenger cars and two wheelers.
v) Cement:
Tamil Nadu ranks third in Cement production in India. Among 10 largest cement companies in India as on 2018, Ramco cement and India Cement find prominent place. And also Tamil Nadu stands second in number of cement plants with 21 units against 35 units in Andra Pradesh.
vi) Fireworks:
The town of Sivakasi is a leader in the areas of printing, fireworks and safety matches. It was fondly called as "Little Japan" by Jawaharlal Nehru. It contributes to 80% of India's fireworks production. Sivakasi provides over 60% of India's total offset printing solutions.
vii) Other Industries:
One of the global electrical equipment public sector companies BHEL has manufacturing plants in Tiruchirappalli and Ranipet. TNPL and the State Government, the world's biggest bagasse-based paper mill in Karut The region around Salem is rich in mineral ores. The country's largest steel plant public sector undertaking SAIL has a steel plant in Salem.

a) Leather
Tamil Nadu accounts for 30 per cent of leather exports and about 70 per cent of leather production in the country. Hundreds of leather and tannery industries are located around Vellore, Dindigul and Erode. Every year the State hosts the India International Leather Fair in Chennai.
b) Electronics
Chennai has emerged as EMS Hub of India. Many multi - national companies have chosen Chennai as their South Asian manufacturing hub.
c) Auto motives
Chennai nicknamed as "The Detroit of Asia" is home to a large number of auto component industries. Tamil Nadu has 28% share each in automotive and auto components industries, 19% in the trucks segment and 18% each in passenger cars and two wheelers.

(i) Gujarat and Maharashtra outshine in economic indicators but not good at social indicator. Similarly, Kerala is better regarding social aspects but it has failed in economic grounds.
(ii) Tamil Nadu stands at the top on both economic and social grounds. 
(iii) According to NAAC and UGC look at the 25 ranks in each of these four areas namely engineering, management, Pharmacy and universities, show that the Tamil Nadu stood first among other states.
(iv) The top engineering institutes in Tamil Nadu included IIT Madras (ranked - 1), National Institute of Technology, Tiruchirappalli (ranked - 12), Vellore Institute of Technology (ranked - 13) and PSG College of Technology, Coimbatore (ranked - 24).
(v) Tamil Nadu has ranked among the best performing states in terms of eight out of nine development parameters like economy power, roads and health while Kerala is in second place
(vi) The Tamil Nadu state has performed better than Gujarat in lowering poverty, improving public health and literacy.
(vii) In health indicators too Tamil Nadu is ahead of Gujarat.
(viii) Percentage of children who are undernourished in Tamil Nadu Stands at 31.1 against 51.7 in Gujarat.