1. Which of the following is a nitrogenous fertilizer?
A) Superphosphate
B) Urea
C) Potash
D) Gypsum
Answer: B) Urea
2. The chemical formula of urea is:
A) NH₄NO₃
B) CO(NH₂)₂
C) KCl
D) CaCO₃
Answer: B) CO(NH₂)₂
3. Which nutrient is mainly supplied by superphosphate?
A) Nitrogen
B) Potassium
C) Phosphorus
D) Sulfur
Answer: C) Phosphorus
4. Potassium nitrate is a source of:
A) Nitrogen and Potassium
B) Phosphorus and Sulfur
C) Calcium and Nitrogen
D) Magnesium and Potassium
Answer: A) Nitrogen and Potassium
5. Which fertilizer improves root development?
A) Nitrogen fertilizer
B) Phosphatic fertilizer
C) Potassic fertilizer
D) Organic manure
Answer: B) Phosphatic fertilizer
6. Ammonium sulfate provides which primary nutrient?
A) Potassium
B) Nitrogen
C) Phosphorus
D) Calcium
Answer: B) Nitrogen
7. Which of the following is an organic fertilizer?
A) Urea
B) Compost
C) Ammonium nitrate
D) Potassium chloride
Answer: B) Compost
8. NPK fertilizer contains:
A) Nitrogen, Phosphorus, Potassium
B) Nitrogen, Potassium, Calcium
C) Phosphorus, Potassium, Sulfur
D) Nitrogen, Sulfur, Zinc
Answer: A) Nitrogen, Phosphorus, Potassium
9. Excessive use of nitrogen fertilizer may cause:
A) Soil erosion
B) Water pollution
C) Increase in soil pH
D) Decrease in plant growth
Answer: B) Water pollution
10. Which nutrient is responsible for green leafy growth?
A) Phosphorus
B) Potassium
C) Nitrogen
D) Calcium
Answer: C) Nitrogen
11. Bone meal is rich in:
A) Nitrogen
B) Phosphorus
C) Potassium
D) Iron
Answer: B) Phosphorus
12. Which fertilizer is commonly called potash?
A) KCl
B) NaCl
C) NH₄Cl
D) CaSO₄
Answer: A) KCl
13. Green manure is obtained from:
A) Animal waste
B) Decomposed plants
C) Chemical factories
D) Rock minerals
Answer: B) Decomposed plants
14. Which micronutrient is essential for chlorophyll formation?
A) Iron
B) Sodium
C) Carbon
D) Hydrogen
Answer: A) Iron
15. Triple superphosphate mainly contains:
A) Calcium nitrate
B) Calcium phosphate
C) Ammonium chloride
D) Potassium sulfate
Answer: B) Calcium phosphate
Pesticides
16. A pesticide used to kill insects is called:
A) Herbicide
B) Fungicide
C) Insecticide
D) Rodenticide
Answer: C) Insecticide
17. DDT is an example of:
A) Fungicide
B) Herbicide
C) Insecticide
D) Fertilizer
Answer: C) Insecticide
18. A chemical used to kill weeds is called:
A) Herbicide
B) Insecticide
C) Nematicide
D) Bactericide
Answer: A) Herbicide
19. Which pesticide is used to kill fungi?
A) Herbicide
B) Fungicide
C) Insecticide
D) Rodenticide
Answer: B) Fungicide
20. Malathion is commonly used as a:
A) Fertilizer
B) Insecticide
C) Herbicide
D) Fungicide
Answer: B) Insecticide
21. A pesticide used against rats is called:
A) Rodenticide
B) Herbicide
C) Nematicide
D) Bactericide
Answer: A) Rodenticide
22. Bioaccumulation is commonly associated with:
A) Urea
B) Compost
C) DDT
D) Potash
Answer: C) DDT
23. Neem extract acts as a:
A) Chemical fertilizer
B) Bio-pesticide
C) Herbicide
D) Fungicide
Answer: B) Bio-pesticide
24. Overuse of pesticides may lead to:
A) Increased soil fertility
B) Pest resistance
C) Better crop yield always
D) Improved biodiversity
Answer: B) Pest resistance
25. Organophosphate pesticides affect:
A) Plant roots
B) Nervous system of insects
C) Soil minerals
D) Chlorophyll
Answer: B) Nervous system of insects
26. Glyphosate is a widely used:
A) Insecticide
B) Herbicide
C) Fungicide
D) Fertilizer
Answer: B) Herbicide
27. Bordeaux mixture is used as a:
A) Insecticide
B) Herbicide
C) Fungicide
D) Fertilizer
Answer: C) Fungicide
28. Integrated Pest Management (IPM) aims to:
A) Eliminate all insects
B) Reduce pesticide use
C) Increase chemical fertilizers
D) Promote monoculture
Answer: B) Reduce pesticide use
29. Carbaryl is a type of:
A) Herbicide
B) Insecticide
C) Fungicide
D) Fertilizer
Answer: B) Insecticide
30. The main purpose of fertilizers is to:
A) Kill pests
B) Improve soil nutrients
C) Prevent diseases
D) Kill weeds
Answer: B) Improve soil nutrients