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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
State the importance of water cycle in nature.
Match the statements in column A with that in column B.
| Column A | Column B |
| (a) deliquescent substance | (1) sodium bicarbonate |
| (b) hygroscopic substance | (2) magnesium chloride |
| (c) efflorestance substance | (3) conc. sulphuric acid |
| (d) substance causing temporary hardness | (4) washing soda |
Answer the following question:
Why is acid added to water before electrolysis ?
How is aquatic life benefited by the fact that water has maximum density at 4oC?
Name a ‘pure form’ and an,‘impure form’ of water in the natural state.
Select the correct answer of the following statement:
A decahydrate crystal.
State the meaning of the term ‘water pollution’. State how you would find out, the different sources of pollution of water bodies in the locality.
A jumbled word is given here. Write the correct form of the word.
CHARREGE
Write any two activities which require more than a bucket of water.
Dissolve two spoons of common salt in half a cup of water. Now if you want to get the salt back, what will you do?
