Question

The graph shows how the pH of soil in a field changes over time. At which point was the soil neutral?
(1 Point)

a. A

b. B

c. C

d. D

Answer 1

Your Answer is B

Thank You

Answer 2

Answer:

The soil was neutral at point B.

Therefore the option (b) is correct.

Explanation:

• pH scale is used to measure the acidic or basic strength of the compound.
• On a pH scale any value in between 0 to 7 represents acidic nature. while between 7 to 14 shows basic nature. The value of pH=7 shows the compound is neutral.
• In the given graph: the point A lies close to pH 11 means it shows basic nature of soil.
• The point B lies exactly on pH=7. Therefore the soil is neutral at point B.
• The point C and D lie below pH 7. Therefore they lie in acidic region. The soil will be acidic on these places.