Answer : 1. "अलवर, अजमेर, उदयपुर, राजसमंद"
Explanation :

1. Palash (Butea monosperma) is one of the very important species of Rajasthan which is mainly seen around Southern Aravali and South-Eastern Aravali. This species is an important part of the 5 tropical dry deciduous forests and forms E5 – Palash forest in India.

2. In Rajasthan, Palash forests are found in Alwar, Ajmer, Udaipur and Rajsamand districts.