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प्रश्न
Of the total water available on the earth, fresh water forms ______ percent.
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उत्तर
Of the total water available on the earth, fresh water forms 2.7 percent.
संबंधित प्रश्न
Name the four main sources of water.
Water has ...................... density and .................. volume at 4°C.
Answer the following question:
Why is acid added to water before electrolysis ?
Explain why:
Rain water does not leave behind concentric rings when boiled.
What are stalgmites and stalactites? How are they formed?
Compare the effect of soaps and detergents on hard water.
Name a deliquescent substance’.
Explain why oil spills have an adverse effect on marine life.
Suggest some ideas to save rainwater in your school.
Fill in the blanks in the following statements using words given in the box.
| air, handpumps, cholera, water, large, ground |
A very ______ number of our people defecate in the open. It may cause ______ pollution and soil pollution. Both the surface water and ______ water get polluted. ______ water is the source for wells, tubewells and ______. Thus it becomes the most common route for ______ borne diseases like ______, dysentery, etc.
