51. Which one is the longest river in Tamil Nadu

(A)  Kaveri
(B)  Bhavani
(C)  Thamirabarani
(D)  Cheyyar

52. Mullaperiyar dispute is between Tamilnadu and

(A)  Karnataka
(B)  Odisha
(C)  Kerala
(D)  Andhra Pradesh

53. Botanical Survey of India is located in Tamil Nadu at

(A)  Chennai
(B)  Madurai
(C)  Coimbatore
(D)  Salem

54. The Pandyan king who consolidated and expanded the Pandya kingdom up to Kaveri was

(A)  Sendan Cheliyan
(B)  Sundara Pandyan
(C)  Koon Pandyan
(D)  Kadunkon

55. The first ruler of the Chola dynasty who kept strong navy was

(A)  Rajaraja the Great
(B)  Rajendra I
(C)  Rajadhiraja I
(D)  Rajendra II