Fertilizer MCQs

By: Prof. Dr. Fazal Rehman | Last updated: May 21, 2025

1. : Which is a potash fertilizer?
(A) KCl
(B) KNO₃
(C) K₂SO₄
(D) All above

2. : Which nutrients are required in very small amount for the normal growth of plants?
(A) Nitrogenous fertilizers
(B) Phosphorus fertilizer
(C) Micronutrients
(D) All of the above

3. : What is the percentage of P₂O₅ in calcium superphosphate?
(A) 16-25
(B) 16-20
(C) 16-30
(D) None of these

4. : What is the percentage of P₂O₅ in triple superphosphate?
(A) 42-46
(B) 16-20
(C) 13-19
(D) None of these

5. : Which is the best/balanced fertilizer?
(A) Potash fertilizer
(B) NPK fertilizer
(C) Phosphatic fertilizer
(D) All above

6. : Which are the crops grown without chemical fertilizers?
(A) Organic crops
(B) Inorganic crops
(C) Green crops
(D) None of the above

7. : What is the percentage of nitrogen in ammonium nitrate?
(A) 80-82
(B) 50-55
(C) 20-25
(D) 32-35

8. : What is the percentage of nitrogen in ammonium sulphate?
(A) 21
(B) 27
(C) 23
(D) 19

9. : Ammonium nitrate is sold as a mixture with which of the following?
(A) Soda Ash
(B) Zinc
(C) Limestone
(D) None of these

10. : Potassium sulphate with 48% to 52% potash is formulated from which of the following?
(A) Potassium nitrate
(B) Potassium phosphate
(C) Potassium chloride
(D) None of these

11. : Which is ideal for horticultural crops and for tobacco and potatoes?
(A) Potassium Nitrate
(B) Potassium chloride
(C) Potassium sulphate
(D) None of these

12. : What is the percentage of nitrogen in urea?
(A) 46%
(B) 77%
(C) 88%
(D) 23%

13. : The nitrogen present in some fertilizers helps plants to do which of the following?
(A) To fight against diseases
(B) To produce protein
(C) To undergo photosynthesis
(D) To produce fat

14. : What is the percentage of nitrogen in ammonia?
(A) 82%
(B) 72%
(C) 46%
(D) 32%

15. : Which of the following is the substance which can be added to the soil to deliver necessary elements for growth?
(A) Fertilizers
(B) Growth regulators
(C) Plant hormones
(D) Pesticides

16. : Which elements is/are major elements for plant growth?
(A) Phosphorus
(B) Potassium
(C) Nitrogen
(D) All of these

17. : Organic farming is the technique of raising crops through use of which of the following?
(A) Manures
(B) Resistant varieties
(C) Bio fertilizers
(D) All of these

18. : Which of the following is green manure/bio fertilizer?
(A) Oat
(B) Rice
(C) Sesbania
(D) Maize

19. : Which is the most effective pesticide?
(A) Organophosphates
(B) Carbamates
(C) Organochlorines
(D) All of these

20. : Which fertilizers supply all the necessary elements to soil?
(A) Potash fertilizers
(B) Complete/NPK fertilizers
(C) Phosphorous fertilizers
(D) Nitrogen fertilizers

21. : Which is a nitrogenous fertilizer?
(A) Calcium ammonium nitrate
(B) Ammonia sulfate
(C) Urea
(D) All above

22. : Which of the following set of raw materials is most appropriate for manufacture of urea?
(A) H₂O, N₂ and H₂
(B) H₂, N₂ and CO
(C) H₂, CO₂ and H₂O
(D) CH₄, N₂ and CO₂

23. : How many categories of fertilizers are there for classification?
(A) Four major categories
(B) Three major categories
(C) Six major categories
(D) None of these

24. : Natural fertilizers can be derived from which of the following?
(A) Animals
(B) Algae
(C) Plants
(D) All of these

25. : Which is used for fruits, vegetables and tobacco?
(A) Potassium sulphate
(B) Potassium Nitrate
(C) Potassium chloride
(D) None of these

26. : Which is a phosphatic fertilizer?
(A) Triple superphosphate
(B) Calcium superphosphate
(C) Phosphatic slag
(D) All of these

27. : Which is a potash fertilizer?
(A) KCl
(B) KNO₃
(C) K₂SO₄
(D) All above

28. : Which nutrients are required in very small amount for the normal growth of plants?
(A) Nitrogenous fertilizers
(B) Phosphorus fertilizer
(C) Micronutrients
(D) All of the above

29. : What is the percentage of P₂O₅ in calcium superphosphate?
(A) 16-25
(B) 16-20
(C) 16-30
(D) None of these

30. : What is the percentage of P₂O₅ in triple superphosphate?
(A) 42-46
(B) 16-20
(C) 13-19
(D) None of these

31. : Which is the best/balanced fertilizer?
(A) Potash fertilizer
(B) NPK fertilizer
(C) Phosphatic fertilizer
(D) All above

32. : Which are the crops grown without chemical fertilizers?
(A) Organic crops
(B) Inorganic crops
(C) Green crops
(D) None of the above

33. : What is the percentage of nitrogen in ammonium nitrate?
(A) 80-82
(B) 50-55
(C) 20-25
(D) 32-35

34. : What is the percentage of nitrogen in ammonium sulphate?
(A) 21
(B) 27
(C) 23
(D) 19

35. : Ammonium nitrate is sold as a mixture with which of the following?
(A) Soda Ash
(B) Zinc
(C) Limestone
(D) None of these

36. : Potassium sulphate with 48% to 52% potash is formulated from which of the following?
(A) Potassium nitrate
(B) Potassium phosphate
(C) Potassium chloride
(D) None of these

37. : Which is ideal for horticultural crops and for tobacco and potatoes?
(A) Potassium Nitrate
(B) Potassium chloride
(C) Potassium sulphate
(D) None of these

38. : What is the percentage of nitrogen in urea?
(A) 46%
(B) 77%
(C) 88%
(D) 23%

39. : The nitrogen present in some fertilizers helps plants to do which of the following?
(A) To fight against diseases
(B) To produce protein
(C) To undergo photosynthesis
(D) To produce fat

40. : What is the percentage of nitrogen in ammonia?
(A) 82%
(B) 72%
(C) 46%
(D) 32%

41. : Which of the following is the substance which can be added to the soil to deliver necessary elements for growth?
(A) Fertilizers
(B) Growth regulators
(C) Plant hormones
(D) Pesticides

42. : Which elements is/are major elements for plant growth?
(A) Phosphorus
(B) Potassium
(C) Nitrogen
(D) All of these

43. : Organic farming is the technique of raising crops through use of which of the following?
(A) Manures
(B) Resistant varieties
(C) Bio fertilizers
(D) All of these

44. : Which of the following is green manure/bio fertilizer?
(A) Oat
(B) Rice
(C) Sesbania
(D) Maize

45. : Which is the most effective pesticide?
(A) Organophosphates
(B) Carbamates
(C) Organochlorines
(D) All of these

46. : Which fertilizers supply all the necessary elements to soil?
(A) Potash fertilizers
(B) Complete/NPK fertilizers
(C) Phosphorous fertilizers
(D) Nitrogen fertilizers

47. : Which is a nitrogenous fertilizer?
(A) Calcium ammonium nitrate
(B) Ammonia sulfate
(C) Urea
(D) All above

48. : Which of the following set of raw materials is most appropriate for manufacture of urea?
(A) H₂O, N₂ and H₂
(B) H₂, N₂ and CO
(C) H₂, CO₂ and H₂O
(D) CH₄, N₂ and CO₂

49. : How many categories of fertilizers are there for classification?
(A) Four major categories
(B) Three major categories
(C) Six major categories
(D) None of these

50. : Natural fertilizers can be derived from which of the following?
(A) Animals
(B) Algae
(C) Plants
(D) All of these

51. : Which is used for fruits, vegetables and tobacco?
(A) Potassium sulphate
(B) Potassium Nitrate
(C) Potassium chloride
(D) None of these

52. : Which is a phosphatic fertilizer?
(A) Triple superphosphate
(B) Calcium superphosphate
(C) Phosphatic slag
(D) All of these