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Fill in the blanks: The sodium compound ...

Fill in the blanks: The sodium compound used for softening hard water is _________

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MODERN PUBLICATION-ACID, BASES AND SALTS-EXERCISE
  1. Which of the following have large pH values: 1M HCl or 1M NaOH

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  2. Common name of Na2 CO3. 10H2O

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  3. Fill in the blanks: The sodium compound used for softening hard water ...

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  4. What happens when bleaching powder is exposed to air?

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  5. What is gypsum? What happens when gypsum is heated to 373K?

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  6. What are the important uses of bleaching powder?

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  7. What is used for plastering fractured bones?

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  8. Write an equation to show the reaction between plaster of paris and wa...

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  9. What is a neutralisation reaction? Give two examples

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  10. How does the pH of an acid solutoin change when it is diluted?

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  11. Will the solution of sodium carbonate acidic or basic?

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  12. Ph of an acidic solution is:

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  13. What do all acids and all bases have common? Explain.

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  14. Why does an aqueous solution of an acid conduct electricity?

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  15. Distilled water is a poor conductor of electricity.

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  16. Why do acids not show acidic behaviour in the absence of water?

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  17. Fresh milk has a ph of 6. how do you think the ph will change as it tu...

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  18. What is efflorescence? Name one compound which show efflorescence?

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  19. State important properties of washing soda.

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  20. What is the action of heat on washing soda

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