How much of world water exists as Fresh Water ?
A. 3.5%
B. 2.5%
C. 1.5%
D. 4.5%

Hint: Water is a tasteless and odourless liquid at room temperature which has the ability to dissolve many of the substances into it .Switzerland is the country with the best quality of fresh water. According to a study , water is available on earth from 1.5 billion years ago.

Complete answer:
As we know that about 71% of the Earth's surface is covered with water and that is why it is known as the ‘Blue Planet’. The total volume of water found on Earth is estimated to be nearly 97.5% salt water and 2.5% being fresh water.

Our main sources for drinking water includes – surface water , groundwater and collected rainwater. According to the UN population Fund, the world will begin to run out of fresh water by the year 2050.
The chemical name of water is Oxidane .

Hence the correct answer is option ‘B’.

Note:
i) Water is composed of two main elements – Hydrogen and Oxygen.
ii) Water regulates the temperature of the Earth and a lot of wildlife, natural phenomena and the entire biodiversity is dependent on water.
iii) World day for Water is marked 22nd March and World Oceans Day is celebrated on 8 June .