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प्रश्न
Give balanced chemical equation for the reaction of water with Sodium oxide.
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उत्तर
\[\ce{Sodium oxide + Water ->\underset{\text{(alkali)}}{Sodium hydroxide}}\]
\[\ce{Na2O + H2O → 2NaOH}\]
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संबंधित प्रश्न
Give balanced chemical equation for the reaction of water with Sodium .
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 |
State the importance of the solubility of CO2 and O2 in water.
State the importance of water for all general uses.
Match the terms in List I with the correct answers in List II.
| List I | List II |
| 1. Solubility in a given solvent decreases with an increase in temperature. | A: Na2SO4.10H2O |
| 2. A white efflorescent crystal | B: NaOH |
| 3. A hygroscopic dehydrating agent | C: Ca(HCO3)2 |
| 4. A deliquescent alkali | D: conc. H2SO4 |
| 5. A substance present in temporary hard water | E: CaSO4 |
What is needed to construct a rain water harvesting pit?
Match the following
| 1. | Flood | Lake |
| 2. | Surface water | Evaporation |
| 3. | Sunlight | Water vapour |
| 4. | Cloud | Pole |
| 5. | Frozen water | Increased rainfall |
From where do the following usually get water? In which form is water present in them?
Clouds
From where do the following usually get water? In which form is water present in them?
Animals
Fill in the blanks selecting words from the following list
snow, rain, clouds, vapour, evaporation, transpiration.
Water, as ______ goes into atmosphere by the processes of ______ and ______ and forms ______, which on condensation fall in the form of ______ and ______.
