Explanation:

?? Jog Falls is formed by the Sharavathi River in the Shimoga District of Karnataka, gushing down from 253 meters. The river originates at Ambuthirtha in Thirthahalli taluk and flows northwest through the Western Ghats, forming the Jog Falls before joining the Arabian Sea at Honavar.
?? Located near the Masthikatte-Hulikal on the Shimoga -Udupi border in Karnataka, Kunchikal Falls is formed by the River Varahi. The waterfall from a height of 455 meters in a cascading form on these rocky boulders giving an impressive sight. The Kunchikal waterfalls rank 116th in height in the world and India’s highest waterfall. The River Varahi flows down from a greater altitude in a cascading manner over these rocky structures close to the Hulikal Ghati Temple. Hence statement 1 is not correct.
?? Dudhsagar Falls also known as the Sea of Milk is referred to as India’s one of highest waterfalls which is approximately 310 meters high and 30 meters wide. It is located on the Mandovi River in the state of Goa. The location of the Dudhsagar Falls is in the Bhagwan Mahaveer Sanctuary and Mollem National Park which is in the middle of the Western Ghats. Hence statement 2 is correct.
?? Shivanasamudra is a popular waterfall on river Kaveri. Shivanasamudra consists of two waterfalls-Gagana Chukki and Bhara Chukki. At Shivanasamudra / Shivasamudra, the river Kaveri splits into two, falls into a valley in two separate places namely Gaganachukki and Bharachukki. It re-unites at the downstream while falling down with great velocity and is of an average width of 849 meters along with 90 meters of height. Hence statement 3 is correct.
?? Chuliya falls is located at the Chambal river in the state of Rajasthan. Hence statement 4 is not correct.