Question : ph value between 6.5 -7.5 makes soil
Option 1: Basic
Option 2: Neutral
Option 3: Acidic
Option 4: none of these
Correct Answer: none of these
Solution : The correct answer is None of these.
pH value of 7 is neutral soultion, less than 7 is acidic and more than 7 is basic. So pH value from 6.5 to 7.5 ranges from acidic, neutal and a little basic. Ideally soil has the pH between 5.5 to 7.0 for the growth of plants.
Concept of pH was discovered in 1909 by a Danish chemist Søren Peter Lauritz Sørensen.
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