Which of the following are the key features of 'National Ganga River Basin Authority (NGRBA)'? 1. River basin is the unit of planning and management. 2. It spearheads the river conservation efforts at the national level. 3. One of the Chief Ministers of the States through which the Ganga flows becomes the Chairman of NGRBA on rotation basis. Select the correct answer using the code given below.

The NGRBA's objective is to ensure effective abatement of pollution and conservation of the river Ganga by adopting a river basin approach for comprehensive planning and management[2], making statement 1 correct. The NGRBA serves as a planning, financing, monitoring and coordinating body of the centre and the states[1], which confirms that it spearheads river conservation efforts at the national level, making statement 2 correct.

However, statement 3 is incorrect. The Prime Minister is the ex-officio Chairperson of the Authority, with Union Ministers and Chief Ministers of states through which Ganga flows (Uttarakhand, Uttar Pradesh, Bihar, Jharkhand and West Bengal) serving as members[4]. There is no rotation basis for the chairmanship among Chief Ministers; the Prime Minister remains the permanent Chair.

Therefore, only statements 1 and 2 are correct, making option A (1 and 2 only) the correct answer.

1. [1] Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 27: Environmental Organizations > 27.5. NATIONAL GANGA RIVER BASIN AUTHORITY (NGRBA) > p. 384
2. [2] Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 27: Environmental Organizations > 27.5. NATIONAL GANGA RIVER BASIN AUTHORITY (NGRBA) > p. 384
3. [3] https://cpcb.nic.in/ngrba/about.html
4. [4] https://wateractionhub.org/projects/99/d/ganga-river-basin-environment-management-plan/