Consider the following pairs:

Place of Pilgrimage	Location
1. Srisailam	Nallamala Hills
2. Omkareshwar	Satmala Hills
3. Pushkar	Mahadeo Hills

Which of the above pairs is/are correctly matched?

The correct option is 1 only.

Let us analyze the correctness of each pair individually:
1. Srisailam - Nallamala Hills: Srisailam is a prominent pilgrimage town in Andhra Pradesh, home to the ancient Mallikarjuna Jyotirlinga temple. It is situated along the Narmada River basin amidst the Nallamala Hills, which are a section of the Eastern Ghats. Thus, this pair is correctly matched.
2. Omkareshwar - Satmala Hills: Omkareshwar is a holy town situated on Mandhata island in the Narmada River in Madhya Pradesh. In contrast, the Satmala Hills are located in the Nashik district of Maharashtra. Thus, this pair is incorrectly matched.
3. Pushkar - Mahadeo Hills: Pushkar is a sacred town in Rajasthan, famous for the Brahma Temple, located near the Aravalli Range. The Mahadeo Hills are located in Madhya Pradesh and form the central part of the Satpura Range. Thus, this pair is incorrectly matched.

Since only the first pair is correctly matched, the correct option is 1 only.