(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 materials 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 onto wet soap. The pH is found to be 8. What does this tell you about soap?

(a) Describe the importance of pH in everyday life. Illustrate your an

1.	(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 materials 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 onto wet soap. The pH is found to be 8. What does this tell you about soap?
Answer» (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 materials 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 onto wet soap. The pH is found to be 8. What does this tell you about soap?