The Central Water Commission (CWC) was established in India in 1945.

Promoting water conservation is not an objective of hydrological research in India. The other three options are all valid objectives.

All of the above methods are commonly used in hydrological research in India.

The Ganga Basin is the largest river basin in India.

The Brahmaputra River is not a major tributary of the Ganga River. The other three options are all major tributaries of the Ganga River.

The average annual rainfall in India is 1,000 mm.

Deforestation is not a major source of water pollution in India. The other three options are all major sources of water pollution in India.

Tehri Dam is the largest dam in India.

Hirakud Dam Project is not a major irrigation project in India. The other three options are all major irrigation projects in India.

The Ganga Basin Aquifer is the largest groundwater aquifer in India.

Groundwater flooding is not a major groundwater problem in India. The other three options are all major groundwater problems in India.

The Ministry of Water Resources is the government agency responsible for water resources management in India.

All of the above are major water resources challenges in India.

The National Water Policy of India was adopted in 2012.

Developing new water resources is not a major goal of the National Water Policy 2012. The other three options are all major goals of the National Water Policy 2012.