Which one of the following mountain ranges is spread over only one State in India ?

The Ajanta range is a short hill range confined to the state of Maharashtra, i.e., it spreads only within Maharashtra. The Aravalli Range runs from Delhi southwestward to Palanpur in Gujarat and thus traverses more than one state [1]. The Sahyadri (Western Ghats) extends about 1,600 km and passes through Maharashtra, Goa, Karnataka, Kerala and Tamil Nadu, so it is multi-state [2]. The Satpura is identified as a separate peninsular range (among Satpura, Maikal and Mahadeo hills) and is not described as limited to a single state in the cited material, implying a wider spread [3]. Hence, Ajanta (option 3) is the only range listed that is confined to one state [3].

Sources

1. [1] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 2: Physiography > 1. The North Central Highlands > p. 54
2. [2] Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 4: BIODIVERSITY > Western ghats as a World Heritage site > p. 57
3. [3] INDIA PHYSICAL ENVIRONMENT, Geography Class XI (NCERT 2025 ed.) > Chapter 2: Structure and Physiography > The Deccan Plateau > p. 12