Explanation:

Pair 1 is not correctly matched: It is located at the northwest Himalayan biogeopgraphic province of Kashmir, back of the snow-draped Pir Panchal.

Pair 2 is correctly matched: Renuka Wetland is located in Himachal Pradesh. It is a natural wetland with freshwater springs and inland subterranean karst formations.

Pair 3 is correctly matched: Rudrasagar Lake, also known as Twijilikma, is a lake located in Melaghar, Tripura, India. The Government of India's Ministry of Environment and Forest has identified Rudrasagar as one of the wetlands of National Importance for conservation and sustainable use based on its biodiversity and socio economic importance.

Pair 4 is not correctly matched: Sasthamcotta Lake or Sasthamkotta Lake, also categorized as a wetland, is the largest fresh water lake in Kerala. Sasthamkotta lake is also known as the Queen of Lakes.