🌱 Crop Production and Management – MCQs for Class 8 Science

Part 3: Q51 – Q75

Q51. The process of dropping seeds in the soil by hand is called:

A) Broadcasting
B) Dibbling
C) Drilling
D) Transplanting

✅ Correct Answer: A) Broadcasting

Explanation:

• A) Broadcasting – ✔ Seeds are scattered by hand.
• B) Dibbling – Placing seeds one by one in holes.
• C) Drilling – Using seed drill.
• D) Transplanting – Shifting seedlings to fields.

Q52. Which one is NOT a traditional tool for irrigation?

A) Chain pump
B) Persian wheel
C) Moat (pulley system)
D) Sprinkler system

✅ Correct Answer: D) Sprinkler system

Explanation:

• A) Chain pump – Traditional.
• B) Persian wheel – Traditional.
• C) Moat – Traditional.
• D) Sprinkler system – ✔ Modern.

Q53. Which one is an oilseed crop?

A) Wheat
B) Mustard
C) Rice
D) Barley

✅ Correct Answer: B) Mustard

Explanation:

• A) Wheat – Cereal.
• B) Mustard – ✔ Seeds give oil.
• C) Rice – Cereal.
• D) Barley – Cereal.

Q54. Which crop is used as fodder?

A) Bajra
B) Jowar
C) Maize
D) All of these

✅ Correct Answer: D) All of these

Explanation:

• A) Bajra – Used as food & fodder.
• B) Jowar – Used as fodder.
• C) Maize – Used as fodder.
• D) All of these – ✔ Correct.

Q55. Which is NOT an advantage of crop rotation?

A) Maintains soil fertility
B) Prevents pests and weeds
C) Ensures better yield
D) Increases soil erosion

✅ Correct Answer: D) Increases soil erosion

Explanation:

• A) Maintains fertility – True.
• B) Prevents pests – True.
• C) Ensures yield – True.
• D) Increases erosion – ✔ False, crop rotation reduces erosion.

Q56. Which is an advantage of manure?

A) Quick action
B) Adds humus to soil
C) Expensive
D) Chemical in nature

✅ Correct Answer: B) Adds humus to soil

Explanation:

• A) Quick action – Fertilizers, not manure.
• B) Adds humus – ✔ Improves soil texture.
• C) Expensive – Manure is cheap.
• D) Chemical – Manure is organic.

Q57. Which one is a Rabi crop?

A) Maize
B) Barley
C) Paddy
D) Cotton

✅ Correct Answer: B) Barley

Explanation:

• A) Maize – Kharif.
• B) Barley – ✔ Rabi crop.
• C) Paddy – Kharif.
• D) Cotton – Kharif/cash crop.

Q58. Which of the following is an example of a Kharif crop?

A) Wheat
B) Gram
C) Paddy
D) Mustard

✅ Correct Answer: C) Paddy

Explanation:

• A) Wheat – Rabi.
• B) Gram – Rabi.
• C) Paddy – ✔ Kharif (monsoon crop).
• D) Mustard – Rabi.

Q59. Which tool is used for loosening soil and uprooting weeds?

A) Hoe
B) Seed drill
C) Tractor
D) Funnel

✅ Correct Answer: A) Hoe

Explanation:

• A) Hoe – ✔ Both loosens soil & removes weeds.
• B) Seed drill – Sows seeds.
• C) Tractor – Pulls machines.
• D) Funnel – Traditional sowing.

Q60. Which process is carried out with the help of bullocks or tractors?

A) Ploughing
B) Irrigation
C) Storage
D) Harvesting

✅ Correct Answer: A) Ploughing

Explanation:

• A) Ploughing – ✔ Done by bullocks or tractors.
• B) Irrigation – Uses water channels/machines.
• C) Storage – Uses granaries.
• D) Harvesting – Cutting crops.

Q61. Which of these crops needs transplantation?

A) Wheat
B) Paddy
C) Mustard
D) Gram

✅ Correct Answer: B) Paddy

Explanation:

• A) Wheat – Direct sowing.
• B) Paddy – ✔ Sown in nursery, transplanted later.
• C) Mustard – Direct sowing.
• D) Gram – Direct sowing.

Q62. Which is the main advantage of drip irrigation?

A) Saves water
B) Adds nutrients
C) Kills weeds
D) Removes pests

✅ Correct Answer: A) Saves water

Explanation:

• A) Saves water – ✔ Drops water near roots only.
• B) Adds nutrients – Not primary purpose.
• C) Kills weeds – Weedicides do that.
• D) Removes pests – Pesticides do that.

Q63. The instrument used for loosening soil is:

A) Seed drill
B) Hoe
C) Sprinkler
D) Funnel

✅ Correct Answer: B) Hoe

Explanation:

• A) Seed drill – Sowing seeds.
• B) Hoe – ✔ Loosens soil, removes weeds.
• C) Sprinkler – Irrigation.
• D) Funnel – Traditional sowing.

Q64. Which one of the following prevents food grain spoilage during storage?

A) Sun drying
B) Mixing with stones
C) Storing in damp bags
D) Exposure to rain

✅ Correct Answer: A) Sun drying

Explanation:

• A) Sun drying – ✔ Removes moisture, prevents spoilage.
• B) Stones – Not useful.
• C) Damp bags – Causes spoilage.
• D) Rain – Damages grains.

Q65. Which one is a Kharif crop?

A) Mustard
B) Maize
C) Wheat
D) Barley

✅ Correct Answer: B) Maize

Explanation:

• A) Mustard – Rabi.
• B) Maize – ✔ Kharif.
• C) Wheat – Rabi.
• D) Barley – Rabi.

Q66. Which one is NOT a source of irrigation?

A) Tube wells
B) Rivers
C) Tanks
D) Threshers

✅ Correct Answer: D) Threshers

Explanation:

• A) Tube wells – Irrigation source.
• B) Rivers – Irrigation source.
• C) Tanks – Irrigation source.
• D) Threshers – ✔ Used for separating grains, not irrigation.

Q67. Which one of the following improves soil fertility naturally?

A) Weedicides
B) Manure
C) Pesticides
D) Storage

✅ Correct Answer: B) Manure

Explanation:

• A) Weedicides – Kill weeds.
• B) Manure – ✔ Improves fertility and texture.
• C) Pesticides – Kill pests.
• D) Storage – Keeps grains safe, no fertility effect.

Q68. The water requirement of paddy is high because:

A) It grows in winter
B) It needs flooded fields
C) It is a legume
D) It is a Rabi crop

✅ Correct Answer: B) It needs flooded fields

Explanation:

• A) Grows in winter – False.
• B) Needs flooded fields – ✔ Paddy requires standing water.
• C) Legume – Paddy is not a legume.
• D) Rabi crop – False, paddy is Kharif.

Q69. What is monocropping?

A) Growing two crops together
B) Growing same crop in a field year after year
C) Changing crops seasonally
D) Growing crops in rotation

✅ Correct Answer: B) Growing same crop in a field year after year

Explanation:

• A) Two crops together – Mixed cropping.
• B) Same crop repeatedly – ✔ Monocropping.
• C) Seasonal change – Crop rotation.
• D) Rotation – Different crops in sequence.

Q70. Which method separates lighter chaff from heavier grains?

A) Threshing
B) Winnowing
C) Sieving
D) Hand-picking

✅ Correct Answer: B) Winnowing

Explanation:

• A) Threshing – Grain from stalk.
• B) Winnowing – ✔ Uses wind to separate chaff.
• C) Sieving – Based on particle size.
• D) Hand-picking – For small impurities.

Q71. Which gas is fixed by blue-green algae in soil?

A) Carbon dioxide
B) Nitrogen
C) Oxygen
D) Hydrogen

✅ Correct Answer: B) Nitrogen

Explanation:

• A) Carbon dioxide – Used in photosynthesis.
• B) Nitrogen – ✔ Fixed into soil by BGA.
• C) Oxygen – Not fixed.
• D) Hydrogen – Not relevant.

Q72. Which one of the following is NOT a storage structure?

A) Silos
B) Granaries
C) Cold storage
D) Combine harvester

✅ Correct Answer: D) Combine harvester

Explanation:

• A) Silos – Storage.
• B) Granaries – Storage.
• C) Cold storage – Storage.
• D) Combine harvester – ✔ Used for harvesting, not storage.

Q73. Which one is NOT a step of crop production?

A) Harvesting
B) Storage
C) Germination
D) Irrigation

✅ Correct Answer: C) Germination

Explanation:

• A) Harvesting – Step.
• B) Storage – Step.
• C) Germination – ✔ Natural process, not a production step.
• D) Irrigation – Step.

Q74. The practice of supplying nutrients to crops is called:

A) Irrigation
B) Manuring
C) Weeding
D) Storage

✅ Correct Answer: B) Manuring

Explanation:

• A) Irrigation – Water supply.
• B) Manuring – ✔ Nutrients added.
• C) Weeding – Removing weeds.
• D) Storage – Keeping grains safe.

Q75. Which is the most important food crop of India?

A) Wheat
B) Rice
C) Maize
D) Barley

✅ Correct Answer: B) Rice

Explanation:

• A) Wheat – Important, but second.
• B) Rice – ✔ Staple food of India.
• C) Maize – Important, but not staple.
• D) Barley – Less important.

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