The maximum concentration limit of urea for spraying is

A. 6%

B. 8%

C. 4%

D. No such limit

Answer: Option C

Solution(By Examveda Team)

The maximum concentration limit of urea for spraying is 4%.
Urea is the most important nitrogenous fertilizer in the country because of its high N content (46%), which is required for the growth and development of the crop.
The maximum concentration limit of urea for spraying is 4%. Concentration should always be kept in mind before spraying any insecticide or fertilizer as excess may harm to an extreme extent the crops.