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(1) 7
The value of pH which indicates the most basic character of the solution is 11.
pH is define as the negative logarithm of the concentration of H⁺ ions present in any solution.
It is mainly used to define the acidity or basicity of any solution, and its value ranges from 0 to 14 means from most acidic nature to most basic nature. So, the highest value shows the basic character of the solution.
Hence option (4) is correct i.e. 11.
To know more pH value, visit the below link:
https://brainly.com/question/1810086
