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प्रश्न
Name the gas produced when chlorine is dissolved in water and exposed to sunlight.
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उत्तर
Oxygen
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संबंधित प्रश्न
Why is water very precious for all living being ?
Give reason On opening a bottle of a cold drink, a fizz sound is heard.
Give reason of Icebergs float on ocean water.
Give one word for the following statement:
Water fit for human consumption .
Explain rain water harvesting.
State the importance of the solubility of CO2 and O2 in water.
Give a balanced equation for the following conversion:
Calcium sulphate in permanent hard water to calcium carbonate using sodium carbonate.
Give a balanced equation for the following conversion:
Potassium oxide to a strong alkali.
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 |
Write a few slogans of your own on the topic “Save Water”
