Airports:
i) Tamil Nadu has four major international airports.
ii) Chennai International Airport is currently the third largest airport in India.
iii) Other international airports in Tamil Nadu are Coimbatore, Madurai and Tiruchirapalli airports.
iv) It also has domestic airports at Tuticorin and Salem.
Sea ports:
i) Tamil Nadu has three major ports. They are in Chennai, Ennore and Tuticorin,
ii) It has an intermediate port at Nagapattinam and 15 other minor ports.

i) Chennai has a well established sub urban railway network, a Mass Rapid Transport System (MRTS).
ii) It is currently developing a Metro system with its underground stretch in operation since May 2017.

Multipurpose projects of Tamilnadu are:
i) Mettur Dam
ii) Sathanur Dam
iii) The Papanasam Dam
iv) Bhavani Sagar dam
v) Mullaiperiyar Dam
vi) Parampikulam Aliyar Project
vii) Amaravathi Dam
viii) Vaigai Dam
ix) Krishnagiri Dam
x) Manimuthar Dam

Cropping seasons:
i) Sornavari(Chittirai pattam)
ii) Samba (Adipattam)
iii) Navarai (Karthigai pattam)

S.No.	Surface Water	Ground Water
1.	The total surface water potential of the state is about 20,46,788 mcm.	The utilizable groundwater resource of the state is 22,423 mcm.
2.	An area of 24 lakh hectares of land is irrigated by surface water.	About 8875 mcm (40 percent) is the balance available for use.

S.No.	Food Crops	Non - Food Crops
1.	Crops which are cultivated for human consumption are called food crops.	Crops which are cultivated for commercial purposes are called non-food crops
2.	Rice, wheat and millets are food crops.	Sugarcane, tobacco, cotton and jute, etc. are non-food crops.

(i) Aware of the road signals.
(ii) Stop, look and cross.
(iii) Listen and ensure whether a vehicle is approaching;
(iv) Don't rush on roads;
(v) Cross roads in pedestrian crossings;
(vi) Don't stretch hands while driving vehicles;
(vii) Never cross road at bends and stay safe in a moving vehicle.

i) Tamil Nadu is the leading holder of country's resources of vermiculite, magnetite, dunite, rutile, garnet, molybdenum and ilmenite.
ii) Important minerals found in the state are as follows: Neyveli has large lignite resources. Coal is also available in Ramanathapuram. Oil and gas are found in the Cauvery basin.
iii) Iron: Iron deposits found in Kanamalai region in Salem district and Kalvarayan malai region of Tiruvannamalai district.
iv) Magnesite: It is available in Salem.
v) Bauxite: Bauxite is found in Servarayan Hills, Kotagiri, Udagamandalam, Palani and Kollimalai areas.
vi) Gypsum: Gypsum is obtained in Tiruchirappalli, Tirunelveli, Thoothukudi and Virudhunagar districts.
vii) IImenite and rutile are found in the. sands of Kanyakumari beach.
viii) Limestone : It is available in Coimbatore, Cuddalore, Dindigul, Kancheepuram, Karur, Madurai, Nagapattinam, Namakkal, Perambalur, Ramanathapuram, Salem and Tiruvallur districts.
ix) Magnesite: It is obtained in Coimbatore, Dharmapuri, Karur, Namakkal, the Nilgiris, Salem, Tiruchirapalli, Tirunelveli and Vellore districts.
x) Feldspar, quartz, copper and lead are also found in some parts of the state.

i) Tea, coffee, cashew, rubber and cinchona are the major plantation crops of the state.
ii) Tamil Nadu ranks second in area and production of tea in India next to Assam. Tea plantations are found in the hills of the Nilgiris and Coimbatore.
iii) Coffee plants are grown in the hills of Western Ghats as well as Eastern Ghats.
iv) The Nilgiris and Yercaud in Salem are the notable regions for tea plantations.
v) It is also found in the hilly slopes of Dindigul, Madurai, Theni and Dharmapuri districts. Tamil Nadu stands second in area and production of coffee next to Karnataka.
vi) Rubber plantations are significant in Kanyakumari.
vii) Pepper is confined to the warm and wet slopes of Eastern and Western Ghats of Tamil Nadu.
viii) Cashew is extensively cultivated in Cuddalore district.