Which of the following pairs are correctly matched? 1. I. Idukki - Thermal power station 2. II. Sabarigiri - Hydro-electric project 3. III. Ghatprabha - Irrigation project 4. IV. Ramganga - Multipurpose project Select the correct answer by using the codes given below: Codes:

1. The question asks to identify the correctly matched pairs of projects/stations and their types. 2. Pair I: Idukki is located in Kerala and is famous for its large Arch dam and associated Hydro-electric project, not a Thermal power station. So, Pair I is incorrectly matched. 3. Pair II: Sabarigiri is a major Hydro-electric project in Kerala. So, Pair II is correctly matched. 4. Pair III: The Ghatprabha project in Karnataka is primarily an Irrigation project, involving dams and canals. So, Pair III is correctly matched. 5. Pair IV: The Ramganga project in Uttarakhand/Uttar Pradesh is a Multipurpose project, involving irrigation, power generation, and flood control. So, Pair IV is correctly matched. 6. Therefore, pairs II, III, and IV are correctly matched.