UPMSP Intermediate Agricultural Chemistry Practice Questions - Uttar Pradesh UPMSP Intermediate (Class 12) Agricultural Chemistry - Code 172 Exam

Active acidity is due to H+ ions free in soil solution, while reserve acidity is due to exchangeable H+ and Al3+ ions adsorbed on soil colloids Active acidity is caused by organic matter, while reserve acidity is caused by mineral fertilizers Active acidity is measured in dry soil, while reserve acidity is measured in saturated paste Active acidity cannot be neutralized by lime, whereas reserve acidity is instantly neutralized