The pH value of pure water is approximately:

Which is the largest fresh water lake in the world by surface area?

Which is the highest waterfall in the world?

What is the boiling point of water at sea level?

What is the boiling point of water in Fahrenheit?

Which gas is used for the purification of water?

Which gas is used in soda water to produce bubbles?

The 'Laccadive Sea' is the historical name of the body of water surrounding which Indian Union Territory?

What is the phenomenon where cold nutrient-rich water from the ocean floor rises to the surface?

Which article of the Indian Constitution provides for the 'Adjudication of disputes relating to waters of inter-state rivers'?

The 'Strait of Gibraltar' connects which two major bodies of water?

Regarding 'Green Hydrogen', consider the following: 1. It is produced through electrolysis of water using renewable energy. 2. India's National Green Hydrogen Mission aims to develop a production capacity of at least 5 MMT per annum by 2030. Which statement is correct?

Which of the following bodies is/are NOT chaired by the Prime Minister of India? 1. National Water Resources Council 2. Inter-State Council 3. Zonal Councils 4. National Integration Council

The 'UN High Seas Treaty' (BBNJ), finalized in 2023 and entering implementation phases in 2026, focuses on: 1. Establishing Marine Protected Areas (MPAs) in international waters. 2. Fair sharing of benefits from Marine Genetic Resources (MGR). Which of the above is/are correct?

Which of the following is a 'Direct' greenhouse gas (GHG)? 1. Carbon Dioxide ($CO_2$) 2. Methane ($CH_4$) 3. Nitrous Oxide ($N_2O$) 4. Water Vapor Select the correct answer:

The 'Strait of Hormuz', a strategic chokepoint for global oil trade, connects which two bodies of water?

The 'Indus Waters Treaty' (1960) was brokered by which international organization?

In a mixture of 60 litres, the ratio of milk and water is 2:1. If this ratio is to be 1:2, then the quantity of water to be further added is:

The ratio of land and water on Earth is 1:2. In the Northern Hemisphere, this ratio is 2:3. What is the ratio of land and water in the Southern Hemisphere?

Gold is 19 times as heavy as water and copper is 9 times as heavy as water. In what ratio should these be mixed to get an alloy 15 times as heavy as water?