(i) The Mangulam inscription mentions the king Nedunchezhiya Pandian.

(ii) The Mangulam inscriptions were depicted in Tamil-Brahmi letters.

Key Points 

The Pandyas

• The Mangulam Inscriptions provide evidence of Pandya king  Nedunchezhiyan of the second century BCE.
• The Sangam Literature Maduraikanchi also refers to Mudukudumi-Peruvazhuthi and another Nedunchezhiyan, defeater of  Talaiyalanganam.
• Mudukudimi-Peruvazhuthi is mentioned in the Velvikkudi copper plates of the 8th century for donating land to Brahmins. 
• He also issued the coins with the Title Peruvazhuthi, to express his conducted many Vedic sacrifices.
• He praised the god of Korkai, and as the overlord of the southern Paratavar, a martial and fishing community of the Tirunelveli coast.
• Hence above facts make the 1 and 2 matched pairs correct.

The Cheras

• The Cheras controlled the central and northern parts of Kerala and the Kongu region of Tamil Nadu.
• The Vanji was their capital and the ports of the west coast Musiri and Tondi were under their control.
• The capital Vanji is identified with Karur, but some other scholars also identified it with Tiruvanchaikkalam in Kerala.
• The main branches of the Chera family and the Poraiya branch ruled from Karur of present-day Tamil Nadu.
• The Patitruppathu speaks of 8 Chera kings and their territory and their fame.
• The Pugalur inscriptions located near Karur provide evidence about Chera kings of 3 generations.
• Cheral Irumporai issued coins and other Chera coins with their bow and arrow emblem but without any scripts.
• Chenguttuvan presented in the Silappathikaram epic was not mentioned in the other Sangam poems.
• Hence the above facts make 3rd pair incorrectly matched with 10 Chera kings.