61. Which of the following is a commonly used chemical fertilizer that provides potassium to crops?
a) Urea
b) Calcium nitrate
c) Superphosphate
d) Potassium chloride
62. Which of the following is a commonly used organic fertilizer that provides nutrients to crops?
a) Compost
b) Urea
c) Superphosphate
d) Potassium chloride
63. Which of the following is a commonly used organic fertilizer that provides nitrogen to crops?
a) Compost
b) Urea
c) Superphosphate
d) Potassium chloride
64. Which of the following is a commonly used organic fertilizer that provides phosphorus to crops?
a) Compost
b) Urea
c) Superphosphate
d) Potassium chloride
65. Which of the following is a commonly used organic fertilizer that provides potassium to crops?
a) Compost
b) Urea
c) Superphosphate
d) Potassium chloride
