Class 8th science NCERT chapter MCQ quiz for upsc

 

Class 8 Science: Top 20 Crop Production Questions

1. What is the primary purpose of ploughing?

To remove weeds To loosen the soil To add fertilizers To sow seeds

2. Which implement is used for tilling the soil?

Hoe Combine Sprinkler Sickle

3. The process of watering crops is called:

Harvesting Irrigation Threshing Winnowing

4. Which crop grows in the rainy season (June-September)?

Wheat Mustard Paddy Peas

5. What protects grains from pests during storage?

Neem leaves Urea NPK Compost

6. The science of vegetable cultivation is called:

Floriculture Olericulture Horticulture Sericulture

7. Which bacteria fix nitrogen in legume roots?

Lactobacillus Rhizobium E.coli Streptococcus

8. What is the advantage of crop rotation?

Prevents soil erosion Controls pests Maintains soil fertility All of these

9. Which is NOT a rabi crop?

Barley Gram Cotton Mustard

10. The modern harvesting tool is:

Sickle Combine Plough Seed drill

11. Manure is better than fertilizers because it:

Is cheaper Improves soil texture Doesn't pollute All of these

12. Drip irrigation is used to:

Save water Control weeds Prevent soil erosion Increase yield

13. BHC (Benzene Hexachloride) is a:

Fertilizer Weedicide Pesticide Fungicide

14. Seed drills are better than traditional sowing because they:

Save time Ensure proper spacing Prevent seed damage All of these

15. Which is a weed?

Wheat Paddy Parthenium Soybean

16. The process of separating grains from stalks is:

Winnowing Threshing Harvesting Weeding

17. Which irrigation method is most water-efficient?

Drip Sprinkler Canal Well

18. NPK fertilizer contains:

Nitrogen, Phosphorus, Potassium Nitrogen, Protein, Kerosene Neem, Phosphorus, Krypton Nickel, Phosphorus, Krypton

19. Compost is made from:

Animal waste Plant waste Both Chemical waste

20. The government body for agricultural research is:

ICAR ISRO DRDO CSIR