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प्रश्न
Select the correct answer of the following statement:
A decahydrate crystal.
पर्याय
Colloidal
Fused calcium chloride
Solvent
Suspension
Washing soda
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उत्तर
Washing soda
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संबंधित प्रश्न
Give one word for the following statement :
The change of states of water from one form to another .
Explain how the peculiar variation of density of water with temperature can cause water— pipes to burst in very cold places.
What is the effect of impurities present in the water on the melting point and boiling point of water?
State the importance of the solubility of CO2 and O2 in water.
Explain why:
Air dissolved in water contains a higher proportion of oxygen.
What is the composition of water? In what volume its elements combine?
Name a ‘pure form’ and an,‘impure form’ of water in the natural state.
What is meant by the term ‘offshore drilling’. State the main environmental effects of offshore drilling.
What happens when a spoonful of sugar, sawdust, and soil are added to a glass of water?
Match the items of Column I with the items of Column II with reference to sewage.
| Column I | Column II | ||
| (a) | Inorganic impurities | (i) | phosphorus and nitrogen |
| (b) | Organic impurities | (ii) | nitrates and phosphates |
| (c) | Nutrients | (iii) | cholera and typhoid |
| (d) | Bacteria | (iv) | pesticides and herbicides |
