Which one of the following pairs is not correctly matched ? 1. Govind Sagar - Satluj 2. Kolleru Lake - Krishna 3. Ukai Reservoir - Tapi 4. Wular Lake - Jhelum

1. The question asks which pair is *not* correctly matched. 2. Pair A: Govind Sagar - Satluj. Govind Sagar is the reservoir created by the Bhakra Dam on the Sutlej (Satluj) river. This is correctly matched. 3. Pair B: Kolleru Lake - Krishna. Kolleru Lake is a large freshwater lake located between the Krishna and Godavari river deltas in Andhra Pradesh. It is fed by seasonal rivers Budameru and Tammileru, not directly by the Krishna river itself, although it lies within its broader deltaic influence. However, it is more strongly associated with the region between the two deltas rather than being *on* the Krishna river. This pairing is often considered not directly correct. 4. Pair C: Ukai Reservoir - Tapi. The Ukai Dam creates the Ukai Reservoir (Vallabh Sagar) on the Tapti (Tapi) river in Gujarat. This is correctly matched. 5. Pair D: Wular Lake - Jhelum. Wular Lake is one of the largest freshwater lakes in Asia, located in Jammu and Kashmir, and it is fed by the Jhelum River. This is correctly matched. 6. Since the question asks for the pair that is *not* correctly matched, and the link between Kolleru Lake and the Krishna river is less direct compared to the others, option B is the answer.