A farmer continuously applies sulphate of ammonia to his faemland for many years, the resulatant soil solution is most likely to

Answer Details

When sulphate of ammonia is continuously applied to farmland, it increases the acidity of the soil. This increased acidity is due to the release of hydrogen ions in the soil solution. Blue litmus paper is used to test for alkalinity (basicity) and red litmus paper for acidity. Therefore, the soil solution is most likely to change blue litmus paper to red, indicating that it is acidic. The correct answer is "Change blue litmus paper to red".