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(a). Explain the pH change as the cause ...

(a). Explain the pH change as the cause of tooth decay. How can tooth decay caused by pH change be prevented?
(b). Explain how pH change in the lake water can endanger the lives of aquatic animals (like fish). What can be done to lessen the danger to the lives of aquatic animals in the lake?

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LAKHMIR SINGH & MANJIT KAUR-ACID, BASES AND SALTS-Exercise
  1. (a). What is a universal indicator? For what purpose is it used? (b)...

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  2. Which chemical is injected into the skin of a person. (a). During an...

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  3. (a). Explain the pH change as the cause of tooth decay. How can tooth ...

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  4. (a). What happens during a bee sting? What is its remedy? (b). What ...

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  5. (a). Why is it wrong the treat a bee sting with vinergar? (b). Why i...

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  6. (a). What does the pH of a solution signify? Three solutions A, B and ...

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  7. (a). The pH values of six solutions A to F are given below: A=0, B=1...

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  8. (a). The pH of a cold drink is 5. What will be its action on blue and ...

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  9. Under what soil conditions do you think a farmer would treat the soil ...

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  10. Which acid is produced in our stomach ? What happens if there is an ex...

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  11. The soil in a field is highly acidic. Name two materials which can be ...

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  12. What is meant by strong bases and weak bases? Classify the following i...

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  13. What ions are present in the solutions of following substances? (write...

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  14. (a). What would you expect the pH of pure water to be? (b). What col...

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  15. (a). What do you think will be the pH in the stomach of a person suffe...

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  16. Separate the following into substances having pH values above and belo...

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  17. (a). Do basic solutions also have H^(+)(aq) ions? If yes, then why are...

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  18. (a). What happens when zinc granules are heated with sodium hydroxide ...

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  19. (a). What effect does the concentration of H^(+) (aq) ions have on the...

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  20. One of the following is a medicine for indigestion. This is:

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