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Practice Class 8 Science Chapter 1 Crop Production and Management MCQ Questions with Answers based on the latest NCERT syllabus. Solve important reasoning-based MCQs on crop production, fertilizers, irrigation, harvesting, storage, and sustainable farming with detailed solutions for CBSE, State Board, Olympiad, and scholarship exam preparation.
Do You Know
Chapter Information
Subject: Science
Class: 8
Chapter: Crop Production and Management
Question Type: Multiple Choice Questions (MCQs)
Difficulty Level: Moderate
Based On: NCERT Latest Syllabus (2026)
Introduction
Efficient crop production depends on the proper use of agricultural practices from sowing to storage. Farmers must make informed decisions about fertilizers, irrigation methods, harvesting time, and grain storage to achieve higher productivity. This practice set includes reasoning-based MCQs that strengthen conceptual understanding and prepare students for school and competitive examinations.
What You Will Learn
✔ Importance of balanced fertilizer use
✔ Scientific irrigation practices
✔ Proper harvesting time
✔ Safe grain storage
✔ Sustainable agriculture
✔ NCERT concept-based revision
✔ Exam-oriented reasoning questions
Why This Topic Is Important
Scientific farming helps produce more food while protecting natural resources. Students should understand how each agricultural practice affects crop health and productivity. These concepts are frequently tested in CBSE, State Board, Olympiad, and scholarship examinations.
1. MCQ Questions with Detailed Solutions
Q1. Why should fertilizers be used in the recommended quantity?
A) To completely replace irrigation
B) Excessive use can reduce soil quality and pollute water
C) They make weeds disappear immediately
D) They eliminate the need for manure
Answer
B) Excessive use can reduce soil quality and pollute water
Concept Behind This Question
Balanced fertilizer use protects both crops and the environment.
Step-by-Step Solution
Fertilizers provide essential nutrients, but excessive use can damage soil health, contaminate nearby water sources, and reduce beneficial microorganisms. Farmers should always use fertilizers in the recommended quantity.
Therefore, the correct answer is B.
Exam Tip
Balanced fertilizer use = Healthy crops + Healthy environment.
Q2. Which irrigation method is most suitable for fruit trees planted in water-scarce regions?
A) Flood irrigation
B) Canal irrigation
C) Drip irrigation
D) Moat irrigation
Answer
C) Drip irrigation
Concept Behind This Question
Water conservation is essential in modern agriculture.
Step-by-Step Solution
Drip irrigation supplies water directly to the roots in small amounts. This minimizes evaporation and is highly suitable for orchards and areas where water is limited.
Therefore, the correct answer is C.
Exam Tip
Drip Irrigation = Best for saving water.
Q3. What is the main reason for harvesting crops only after they become fully mature?
A) Immature crops contain more water and give lower yield
B) It makes irrigation easier
C) It increases weed growth
D) It changes the crop season
Answer
A) Immature crops contain more water and give lower yield
Concept Behind This Question
Harvesting at the correct stage ensures maximum production and quality.
Step-by-Step Solution
If crops are harvested before maturity, the grains may be underdeveloped and have high moisture content. Mature crops produce better-quality grains with higher yield.
Therefore, the correct answer is A.
Exam Tip
Harvest only after full maturity for better yield.
Q4. Which of the following is the best way to protect stored grains from insects and moisture?
A) Keep grains wet before storage
B) Store grains in open baskets during the rainy season
C) Dry grains properly and store them in clean, airtight containers
D) Wash grains daily
Answer
C) Dry grains properly and store them in clean, airtight containers
Concept Behind This Question
Proper storage reduces post-harvest losses.
Step-by-Step Solution
Grains should be dried before storage to reduce moisture. Clean and airtight containers protect them from insects, rodents, fungi, and bacteria.
Therefore, the correct answer is C.
Exam Tip
Dry + Airtight Storage = Safe Grains
Q5. Which statement best describes sustainable agriculture?
A) Using unlimited fertilizers without planning
B) Following farming methods that protect soil, water, and the environment while producing crops
C) Growing only one crop every year
D) Avoiding irrigation completely
Answer
B) Following farming methods that protect soil, water, and the environment while producing crops
Concept Behind This Question
Sustainable farming balances productivity with environmental protection.
Step-by-Step Solution
Sustainable agriculture includes efficient irrigation, balanced use of fertilizers, organic manure, soil conservation, and responsible farming methods that protect natural resources for future generations.
Therefore, the correct answer is B.
Exam Tip
Sustainable Agriculture = High Yield + Environmental Protection
Important Formulas & Concepts
1. Balanced Fertilizer Use
- Provides essential nutrients
- Prevents nutrient deficiency
- Protects soil health when used properly
2. Drip Irrigation
Advantages:
- Saves water
- Supplies water directly to roots
- Reduces evaporation
- Suitable for orchards and dry regions
3. Proper Harvesting
Harvest crops only after they are fully mature to obtain better-quality grains and maximum yield.
4. Safe Grain Storage
- Dry grains completely
- Store in clean, airtight containers
- Protect from insects, rodents, fungi, and moisture
5. Sustainable Agriculture
Farming practices that increase crop production while conserving soil, water, and the environment.
Related Practice Questions
- Why should fertilizers be used carefully?
- Explain the advantages of drip irrigation.
- Why should crops be harvested only after maturity?
- What precautions should be taken while storing grains?
- What is sustainable agriculture?
Mini Quiz Challenge
Fill in the blanks
- Excessive use of fertilizers may harm __________ quality.
- __________ irrigation supplies water directly to plant roots.
- Sustainable agriculture helps protect the __________.
Answers
- Soil
- Drip
- Environment
Exam Tips
✔ Learn the advantages and disadvantages of fertilizers.
✔ Revise modern irrigation techniques.
✔ Remember proper grain storage methods.
✔ Understand sustainable farming practices.
✔ Focus on reasoning-based NCERT questions.
Quick Revision Notes
✔ Fertilizers should be used in balanced amounts.
✔ Drip irrigation conserves water.
✔ Mature crops give better yield.
✔ Dry grains before storage.
✔ Airtight containers protect grains.
✔ Sustainable agriculture protects natural resources.
✔ Proper farming improves food security.
✔ Scientific agriculture benefits both farmers and the environment.
Common Mistakes Students Make
❌ Thinking more fertilizer always means more production.
❌ Confusing sustainable agriculture with organic farming only.
❌ Ignoring the importance of drying grains before storage.
❌ Believing immature crops should be harvested early.
❌ Assuming drip irrigation is suitable only for small gardens.
Key Takeaways
✔ Balanced fertilizer use protects crops and soil.
✔ Drip irrigation is the most water-efficient irrigation method.
✔ Harvest crops only after full maturity.
✔ Proper storage prevents grain damage.
✔ Sustainable agriculture protects natural resources.
✔ Scientific farming increases productivity.
✔ Responsible agricultural practices ensure long-term food security.
FAQs
1. Why should fertilizers not be used excessively?
Excessive use can reduce soil quality and pollute nearby water sources.
2. Which irrigation method is best for water conservation?
Drip irrigation is one of the most efficient methods for conserving water.
3. Why are mature crops harvested?
Mature crops provide better-quality grains and higher yield.
4. How should grains be stored safely?
They should be dried properly and stored in clean, airtight containers.
5. What is sustainable agriculture?
It is farming that increases production while protecting soil, water, and the environment.
Conclusion
Practice Set 5 completes the first phase of Class 8 Science Chapter 1 – Crop Production and Management by covering balanced fertilizer use, efficient irrigation, harvesting, grain storage, and sustainable agriculture. These concept-based MCQs strengthen students’ understanding of scientific farming practices and improve their confidence for school exams, Olympiads, and scholarship tests. Regular NCERT-based practice is the key to mastering this chapter.
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