At which of the following hills the Eastern Ghats join the Western Ghats?

Mahendragiri, the highest peak of the Eastern Ghats, is located in which one of the following states?

Which is the highest peak in the Western Ghats of Kerala?

Which of the following is the highest peak in South India?

Which one of the following is the correct sequence of the hills of Central India located from West to East?

Which one of the following states does not lie along Patkai hills?