Explanation:

The Eastern Ghats or Kizhakku thodarchi malaigal or Purva Gha? or toorpu kanumalu, also known as Mahendra Parvatam in the south, are a discontinuous range of mountains along India's eastern coast. The Eastern Ghats run from northern Odisha through Andhra Pradesh and Telangana to Tamil Nadu in the south passing some parts of Karnataka. Hence, statement 1 is not correct.

The Eastern Ghats are older than the Western Ghats and have a complex geologic history related to the assembly and breakup of the ancient supercontinent of Rodinia and the assembly of the Gondwana supercontinent. The Eastern Ghats are made up of charnockites, granite gneiss, khondalites, metamorphic gneisses and quartzite rock formations. The structure of the Eastern Ghats includes thrusts and strike-slip faults all along its range. Limestone, bauxite and iron ore are found in the Eastern Ghats hill ranges. Hence, statement 2 is correct.

As with the Western Ghats, these mountain ranges also have local names along the discontinuous hill ranges. At their southern end, the Eastern Ghats form several ranges of low hills. The southernmost of the Eastern Ghats are the low Sirumalai and Karanthamalai Hills of southern Tamil Nadu.

North of the Kaveri River are the higher Kollimalai, Pachaimalai, Javadi, Shevaroy (Servarayan), Kalrayan Hills, Chitteri, Palamalai and Mettur Hills in northern Tamil Nadu state. Hence statement 4 is not correct.

The Tirumala Hills are located along the Seshachalam-Velikonda Range of the Eastern Ghats. The Palar River cuts through the ranges. The Velikonda Range eventually descends to the coastal plain in the northern Nellore district, while the Nallamalla Range in Kurnool continues to the River Krishna. Hence, statement 3 is correct.