Which of the following pairs are correctly matched? 1. Idukki : Thermal Power Station 2. Sabarigiri : Hydroelectric Project 3. Ghatprabha : Irrigation Project 4. Ramganga : Multipurpose Project Select the correct answer using the code given below.

The Idukki project is a major hydroelectric power station on the Periyar River in Kerala, not a thermal power station [2]. Sabarigiri is correctly matched as a hydroelectric project located in Kerala [3]. The Ghataprabha project in Karnataka is primarily a major irrigation project on the Ghataprabha River, though it also has multipurpose components including hydropower [1]. The Ramganga project, located in Uttar Pradesh, is a multipurpose project providing both irrigation and power benefits [1]. Therefore, pairs 2, 3, and 4 are correctly matched. Idukki's misclassification as thermal makes pair 1 incorrect, as it is one of the largest arch dams in Asia dedicated to hydroelectricity [4].

Sources

1. [2] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 8: Energy Resources > Table 8.9 > p. 19
2. [3] https://waterresources.karnataka.gov.in/storage/pdf-files/O%20&%20M%20Manuals/O&M%20HIDKAL%20CWC%20approved%20copy.pdf
3. [1] Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 9: Distribution of World Natural Resources > 3. Regions with large Demand of electricity > p. 22
4. [4] https://indiawris.gov.in/wiki/doku.php?id=command_area_development_programme