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The pH of soil A is 7.5 while that of so...

The pH of soil A is 7.5 while that of soil B is 4.5. Which of the two soils, A or B, should be treated powdered chalk to adjust its pH and why?

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Soil B, To reduce its acidity
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You have two solutions, A and B. The pH of solution A is 6 and pH of solution B is 8. Which solution has more hydrogen ion concentration? Which of this is acidic and which one is basic?

(a) Describe the importance of pH in everyday life. Illustrate your answer with examples. (b) A farmer has found that the pH of soil in his fields is 4.2. Name any two chemical meterials which he can mix with the soil to adjust its pH. Give reason for your choice. (c) Why are detergents also called 'soap-less soaps' ? Give the various advantages of detergents over soaps. (d) A person put some universal indicator paper on to wet soap. The pH is found to be 8. What does this tell you about soap ?

(a). What does the pH of a solutio signify? Three solutions A, B and C have pH values of 6,4 and 10 respectively. Which of te solutions is highly acidic? (b). A farmer has found that the pH of soil in his fields is 4.2. Name any two chemical materials which he can mix with the soil to adjust its pH.

When soil pH increases, which of the following minerals become unavailable:

LAKHMIR SINGH & MANJIT KAUR-ACID, BASES AND SALTS-Exercise
  1. Name the scientist who developed the pH scale.

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  2. Name the indicator which can give us an idea of how strong or weak an ...

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  3. The pH of soil A is 7.5 while that of soil B is 4.5. Which of the two ...

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  4. What is the name of the indicator which can be used for testing the pH...

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  5. What colour will universal indicator show if you add it to the followi...

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  6. A beaker of concentrated hydrochloric acid has a pH of 1. What colour ...

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  7. Two solutions X and Y are tested with universal indicator. Solution X ...

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  8. Two solutions A and B have pH values of 3.0 and 9.5 respectively. Whic...

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  9. Two drinks P and Q gave acidic and alkaline reactions, respectively on...

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  10. Two solutions X and Y have pH=4 and pH=8, respectively. Which solution...

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  11. Fill in the following blanks with suitable words (a). Acids have a p...

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  12. Fresh milk has a pH of 6. How do you think the pH will change as it tu...

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  13. (a). What is a universal indicator? For what purpose is it used? (b)...

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

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

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

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

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

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

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

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