Explanation:

Nanda Devi National Park is situated around the peak of Nanda Devi (7816 m) in the state of Uttarakhand in northern India.

• The park encompasses the Nanda Devi Sanctuary, a glacial basin surrounded by a ring of peaks, and drained by the Rishi Ganga through the Rishi Ganga Gorge.
• The Park was established as Sanjay Gandhi National Park by Notification in 1982 but was later renamed Nanda Devi National Park.
• It was inscribed a World Heritage Site by the United Nations Educational, Scientific and Cultural Organization (UNESCO) in 1988.
• Some 312 floral species that include 17 rare species have been found here. Fir, birch, rhododendron, and juniper are the main flora.
• The Fauna of Nanda Devi National Park include Himalayan black bear, Snow leopard, Himalayan Musk Deer etc.

Hence only statements 1&3 are correct.