Question

8.
Which one of the following is true about pH Scale.
1 Marks
If pH value is greater than 7, the solution is basic
If pH value is 7, the solution is acidic.
pH scale can't be used to check neutral solution.
The pH of lemon juice is 11-14.​

Answer 1

Answer:

the first and second option are correct

Explanation:

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Answer 2

The truth about the pH scale is If the pH value is greater than 7, the solution is basic.

• In the pH scale, the range from 1-6 which is below 7 indicates an acidic range again the range from pH 8-14 or above 7 indicates a basic range.
• The pH of 7 indicates a neutral range.
• Lemon juice is an acidic substance. Hence its pH should be below 7 not between 11-14.
• Hence the true statement is If the pH value is greater than 7, the solution is basic.