1. What is the pH range of most agricultural soils?

• 3-4
• 5-7
• 8-9
• 10-11

2. Which soil horizon is also known as the topsoil?

• O Horizon
• A Horizon
• B Horizon
• सी क्षितिज

3. What is the cation exchange capacity (CEC) of clay soil?

• 1-5 meq/100g
• 5-15 meq/100g
• 15-30 meq/100g
• 20-50 meq/100g

4. Which nutrient is most essential for photosynthesis in plants?

• नाइट्रोजन
• फास्फोरस
• पोटेशियम
• Magnesium

5. What is the scientific name of the common wheat plant?

• ओरिजा सैटिवा
• ज़िया मेस
• ट्रिटिकम एस्टिवम
• होर्डियम वल्गारे

6. Which growth regulator is primarily responsible for stem elongation in plants?

• Auxins
• Gibberellins
• Cytokinins
• Ethylene

7. What is the common name for Citrus sinensis?

• नींबू
• नारंगी
• Lime
• Grapefruit

8. Which of the following is a cool-season vegetable?

• टमाटर
• लेट्यूस
• बैंगन
• कद्दू

9. In grafting, which part of the plant is referred to as the scion?

• Rootstock
• Shoot
• Leaf
• Fruit

10. Which vitamin is essential for the proper development of bones in livestock?

• Vitamin A
• Vitamin B
• Vitamin C
• Vitamin D

11. What is the average gestation period for a cow?

• 150 days
• 180 days
• 280 days
• 320 days

12. Which breed of cattle is known for its high milk production?

• Hereford
• Angus
• Holstein
• Charolais

13. What is the primary purpose of a combine harvester?

• Plowing fields
• Planting seeds
• Harvesting crops
• Irrigating fields

14. Which of the following is a renewable source of energy commonly used in agriculture?

• Diesel
• Natural gas
• Solar power
• Coal

15. What is the function of a reaper binder?

• Cutting and gathering crops
• Separating grains from chaff
• Spraying pesticides
• Measuring soil pH

16. What is the term for the financial gain obtained from the sale of goods?

• Revenue
• Expense
• Deficit
• Budget

17. Which economic principle states that the marginal cost of production tends to decrease as output increases?

• Law of Supply
• Law of Demand
• Economies of Scale
• Comparative Advantage

18. What is the term for the total value of all goods and services produced within a country in a specific period?

• Gross Domestic Product (GDP)
• Net National Product (NNP)
• Gross National Income (GNI)
• Consumer Price Index (CPI)

19. What is the primary cause of powdery mildew in plants?

• जीवाणु
• कवक
• Virus
• नेमाटोड्स

20. Which plant disease is caused by the bacterium Xanthomonas campestris?

• Citrus Canker
• Fire Blight
• Bacterial Wilt
• Black Rot

21. Which virus causes the mosaic disease in tobacco plants?

• Tobacco Mosaic Virus (TMV)
• Potato Virus Y (PVY)
• Barley Yellow Dwarf Virus (BYDV)
• Tomato Spotted Wilt Virus (TSWV)

22. What is the study of insects called?

• वनस्पति विज्ञान
• Zoology
• Entomology
• Ornithology

23. Which insect is known for its role in pollination?

• Scorpion
• Mosquito
• Beetle
• Honeybee

24. What is the scientific name of the common housefly?

• Musca domestica
• Drosophila melanogaster
• Anopheles gambiae
• Culex pipiens

25. Which of the following is considered a weed in agricultural fields?

• गेहूँ
• भुट्टा
• Dandelion
• सोयाबीन

26. What is the term for the process of removing weeds by hand?

• Cultivating
• Hoeing
• निराई
• छंटाई

27. Which herbicide is known for its non-selective action?

• Atrazine
• Glyphosate
• 2,4-D
• Dicamba

28. What is the main purpose of crop rotation?

• कीट प्रतिरोध बढ़ाएँ
• मृदा अपरदन को कम करना
• Improve soil fertility
• Maximize yield

29. Which crop is typically grown in a paddy field?

• गेहूँ
• चावल
• मक्का
• सोयाबीन

30. Which method of irrigation is considered most water-efficient?

• बाढ़ सिंचाई
• स्प्रिंकलर सिंचाई
• बूंद से सिंचाई
• Surface irrigation

31. Which term refers to the natural environment in which an organism lives?

• पारिस्थितिकी तंत्र
• Biome
• Habitat
• Niche

32. What is the term for species that are native to a specific geographic area?

• Exotic species
• Endangered species
• Endemic species
• Invasive species

33. What is the primary cause of soil erosion?

• Earthquakes
• Deforestation
• Urbanization
• Mining

34. What is the main greenhouse gas contributing to global warming?

• नाइट्रोजन
• Oxygen
• Carbon Dioxide
• Methane

35. Which of the following is a renewable resource?

• Coal
• Oil
• Solar Energy
• Natural Gas

36. What is the term for the process by which fertile land becomes desert?

• Erosion
• Salinization
• Desertification
• Deforestation

37. What is the basic unit of heredity?

• Chromosome
• Gene
• DNA
• RNA

38. Who is known as the father of modern genetics?

• Charles Darwin
• Gregor Mendel
• James Watson
• Barbara McClintock

39. Which breeding method involves crossing individuals that are closely related?

• Outbreeding
• Inbreeding
• Hybridization
• Mutation breeding

40. What is the primary purpose of postharvest technology?

• Increase yield
• Improve crop quality
• Extend shelf life
• Enhance growth rate

41. Which storage method involves cooling to temperatures just above freezing?

• Ambient storage
• Refrigerated storage
• Modified atmosphere storage
• Controlled atmosphere storage

42. What is the term for the process of removing field heat from produce after harvest?

• ब्लैंचिंग
• Curing
• Pre-cooling
• Ripening

43. What is the chemical formula for water?

• H2O
• CO2
• NaCl
• H2SO4

44. Which element is a primary component of proteins in plants?

• नाइट्रोजन
• फास्फोरस
• पोटेशियम
• Calcium

45. What is the pH level of a neutral solution?

• 1
• 7
• 10
• 14

46. What is the main function of xylem in plants?

• Transport of water and nutrients
• Photosynthesis
• Reproduction
• Protection from herbivores

47. Which of the following is an example of a legume?

• आलू
• टमाटर
• मटर
• गाजर

48. What is the common name for the disease caused by Phytophthora infestans in potatoes?

• Powdery mildew
• Root rot
• Late blight
• Leaf curl

49. What is the role of nitrogen-fixing bacteria in the soil?

• Decompose organic matter
• Convert nitrogen gas to ammonia
• Absorb water and nutrients
• Provide resistance to pests

50. What is the primary benefit of using green manure in agriculture?

• Increase soil erosion
• Improve soil fertility
• Control pests
• Reduce weed growth