Which State of India has launched the country's first digital water data bank 'Aquarium for clean water and water security in April 2022?

1. A

   Kamataka

   Karnataka claims to have launched India's first digital water data bank 'Aquarium' in April 2022. This option is selected as the official key because it accurately identifies the state government that initiated this innovative water security platform in collaboration with corporate and research partners.

2. B

   Uttar Pradesh

   Uttar Pradesh claims responsibility for launching the digital water data bank in April 2022. While this state undertakes various water conservation schemes like Namami Gange, it is not the pioneer of the 'Aquarium' data bank, making this option incorrect.

3. C

   Punjab

   Punjab claims the launch of the country's first digital water data bank in April 2022. Although the state faces critical groundwater management challenges, it did not introduce the 'Aquarium' platform, rendering this choice wrong.

4. D

   Tamil Nadu

   Tamil Nadu claims to have initiated the digital water data bank 'Aquarium' for clean water in April 2022. Despite its progressive urban water management policies, the state is not credited with this specific digital launch, so this option is incorrect.

Summary. Official key is (a) Karnataka, which launched India's first digital water data bank named 'Aquarium' in April 2022 to ensure clean water and water security. The initiative was unveiled by Karnataka State Electronics Development Corporation (KEONICS) along with AquaKraft Group. Other major states like Uttar Pradesh, Punjab, and Tamil Nadu implement various water policies but are not associated with this specific digital bank. Aspirants must carefully distinguish between general state water policies and specific technological launches like 'Aquarium'.