Question 20 - Agricultural Science
A farmer continuously applies sulphate of ammonia to his faemland for many years, the resulatant soil solution is most likely to
A) Leave blue litmus paper unchanged
B) Change blue litmus paper to re
C) Change red litmus paper to blue
D) Be rich in soil microbes
The correct option is B.
This question was adopted from 2015 WAEC past questions.
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