The correct options are
B The Anamalai hills are located to the south of Palghat gap.
C The Kadamparai hydroelectric power plant is located on Anamalai hills.
D Varusanadu and Andipatti hills are famous for Srivilliputhur Grizzled Squirrel Wildlife Sanctuary.
Mukkuruthi is one of the peaks of the Nilgiri hills. The Palani hills are located in the Dindugal district of Tamil Nadu. The Anamalai hills are on the border of Kerala and Tamil Nadu, located south of Palghat gap. It is famous for the Kadamparai hydroelectric power plant, the Anamalai Tiger Reserve, the Aliyar Reserved Forest, and the Valparai hill station. Varusanadu and Andipatti hills are famous for Srivilliputhur Grizzled Squirrel Wildlife Sanctuary.