Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
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Across: 2. Water is a clear and transparent 7. A method used fo remove the hardness of water 11. Water used for drinking 12. The process in which air under pressure is blown into filtered water. 13. Over growth of algae in water bodies due to excessive fertilizers. 14. Saving water for the use in future.
Down: 1. Amount of heat that is needed to raise the temperature of a unit mass of a substance by 1°C. 3. Breaking down of substances by the passage of electric current. 4. Temporary & permanent hardness both can be removed by the method 5. Wastewater that is disposed of from households. 6. Amount of heat energy required by ice to change into water. 8. Addition of chemicals to kill the microorganisms present in water. 9. Addition of unwanted materials to the water. 10. Water containing sodium chloride (common salt).