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प्रश्न
State any two sources of water pollution.
उत्तर
Two sources of water pollution are:
(a) Industrial waste
(b) Sewage.
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संबंधित प्रश्न
Give balanced chemical equation for the reaction of water with Carbon dioxide.
What are the main causes of water pollution ? How can it be controlled ?
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 |
Give one word for the following statement :
The change of states of water from one form to another .
Describe the water-cycle in nature.
Name a ‘pure form’ and an,‘impure form’ of water in the natural state.
Fill in the blank:
Household detergents contain mainly _____ and pollute water bodies.
Name one substance which is ‘deliquescent’.
________ of water is in oceans and seas.
From where do the following usually get water? In which form is water present in them?
Animals
