Page 423 Class 8th Science MCQs Chapter - Crops Production and Management
Chapter – Crops Production
and Management
Q1. Which of the following is not a Rabi crop?
A) Wheat
B) Mustard
C) Cotton
D) Gram
Answer:
(C) Cotton
Q2. Which agricultural tool is used for loosening the
soil before sowing seeds?
A) Harrow
B) Hoe
C) Sickle
D) Seed drill
Answer: (B) Hoe
Q3. The process of supplying water to crops at regular
intervals is called:
A) Harvesting
B) Irrigation
C) Sowing
D) Manuring
Answer:
(B) Irrigation
Q4. Drip irrigation is most suitable for:
A) Paddy
B) Wheat
C) Cotton
D) Fruit plants
Answer:
(D) Fruit plants
Q5. Which of the following is a Kharif crop?
A) Barley
B) Wheat
C) Paddy
D) Gram
Answer:
(C) Paddy
6. Which method of irrigation minimizes
evaporation loss the most?
A) Sprinkler
B) Furrow
C) Drip
D) Flood
Answer:
(C) Drip
Q7. Which gas is released during the process of
composting?
A) Oxygen
B) Carbon dioxide
C) Methane
D) Nitrogen
Answer:
(C) Methane
Q8. Which microorganism is used in biofertilizers
to fix nitrogen in soil?
A) Rhizobium
B) Lactobacillus
C) Yeast
D) Penicillium
Answer:
(A) Rhizobium
Q9. The cutting and gathering of mature crops from
the field is called:
A) Sowing
B) Harvesting
C) Weeding
D) Threshing
Answer:
(B) Harvesting
Q10. Which device is used for separating grains
from chaff after threshing?
A) Hoe
B) Winnowing machine
C) Harrow
D) Sprinkler
Answer:
(B) Winnowing machine
Q11. Which of the following is not an organic
manure?
A) Compost
B) Vermicompost
C) Urea
D) Green manure
Answer:
(C) Urea
Q12. Which of these irrigation methods is best suited
for sandy soils?
A) Flood irrigation
B) Sprinkler irrigation
C) Drip irrigation
D) Furrow irrigation
Answer:
(B) Sprinkler irrigation
Q13. The process of removing unwanted plants from
the crop field is called:
A) Harvesting
B) Weeding
C) Tilling
D) Sowing
Answer:
(B) Weeding
Q14. Which of the following implements is used for
sowing seeds at proper depth and spacing?
A) Hoe
B) Seed drill
C) Plough
D) Leveller
Answer:
(B) Seed drill
Q15. The crop which needs standing water for its
entire growth period is:
A) Wheat
B) Paddy
C) Maize
D) Cotton
Answer:
(B) Paddy
Q16. Which of the following is used to add
phosphorus to the soil?
A) Urea
B) Superphosphate
C) Ammonium sulphate
D) Potash
Answer:
(B) Superphosphate
Q17. Which of these is an example of a fibre crop?
A) Jute
B) Gram
C) Maize
D) Mustard
Answer:
(A) Jute
Q18. The practice of growing two or more crops in
the same field in a single season is called:
A) Crop rotation
B) Intercropping
C) Mixed cropping
D) Multiple cropping
Answer:
(C) Mixed cropping
Q19. Which of the following is not an example of
kharif crop?
A) Maize
B) Groundnut
C) Bajra
D) Wheat
Answer:
(D) Wheat
Q20. Ploughing helps in:
A) Aerating the soil
B) Removing weeds
C) Mixing manure
D) All of these
Answer:
(D) All of these
Q21. Which method prevents water logging?
A) Drip irrigation
B) Flood irrigation
C) Basin irrigation
D) Check basin
Answer:
(A) Drip irrigation
Q22. The method used to sow seeds of wheat is
usually:
A) Broadcasting
B) Seed drill
C) Dibbler
D) Transplantation
Answer:
(B) Seed drill
Q23. Which of the following is an oil-yielding
crop?
A) Sunflower
B) Cotton
C) Sugarcane
D) Maize
Answer:
(A) Sunflower
Q24. Which of the following reduces soil fertility
over time if used in excess?
A) Manure
B) Fertilizers
C) Bio-compost
D) Vermicompost
Answer:
(B) Fertilizers
Q25. Which disease is caused in wheat due to
fungi?
A) Blast
B) Rust
C) Wilt
D) Smut
Answer:
(B) Rust
Q26. The process of growing different crops
alternately in the same field is called:
A) Intercropping
B) Crop rotation
C) Multiple cropping
D) Monocropping
Answer:
(B) Crop rotation
Q27. Which is the main source of irrigation in
rainy season in India?
A) Canals
B) Tube wells
C) Rainwater
D) Tanks
Answer:
(C) Rainwater
Q28. Threshing is done to:
A) Cut crops
B) Separate seeds from husk
C) Irrigate fields
D) Remove weeds
Answer:
(B) Separate seeds from husk
Q29. Which crop is known as “golden fibre”?
A) Jute
B) Cotton
C) Flax
D) Hemp
Answer:
(A) Jute
Q30. Which type of soil is most suitable for
growing wheat?
A) Sandy
B) Loamy
C) Clayey
D) Laterite
Answer:
(B) Loamy
Q31. Which agricultural practice conserves both
water and soil?
A) Strip cropping
B) Contour ploughing
C) Mulching
D) All of these
Answer:
(D) All of these
Q32. Which of these is not a plant-based manure?
A) Compost
B) Green manure
C) Bone meal
D) Crop residue
Answer:
(C) Bone meal
Q33. Which nutrient is supplied by Potash
fertilizers?
A) Nitrogen
B) Phosphorus
C) Potassium
D) Sulphur
Answer:
(C) Potassium
Q34. Which crop needs transplanting method for
sowing?
A) Paddy
B) Wheat
C) Maize
D) Cotton
Answer:
(A) Paddy
Q35. Which of the following is not a step in
agricultural practice?
A) Manuring
B) Harvesting
C) Distillation
D) Irrigation
Answer:
(C) Distillation
Q36. Which irrigation method is most suitable for
uneven land?
A) Drip
B) Sprinkler
C) Furrow
D) Flood
Answer:
B) Sprinkler
Q37. Which is a harmful effect of over-irrigation?
A) Increased fertility
B) Water logging
C) Reduced erosion
D) Aeration of soil
Answer:
(B) Water logging
Q38. Which crop requires the largest amount of
water during its growth?
A) Wheat
B) Maize
C) Sugarcane
D) Cotton
Answer:
(C) Sugarcane
Q39. Which of the following helps in replenishing
soil fertility naturally?
A) Crop rotation
B) Overuse of fertilizers
C) Burning stubble
D) Flooding fields
Answer:
(A) Crop rotation
Q40. Which is the first step in crop production?
A) Irrigation
B) Ploughing
C) Sowing
D) Harvesting
Answer:
(B) Ploughing
Q41. Which pest affects stored grains?
A) Bollworm
B) Aphids
C) Weevil
D) Rust fungi
Answer:
(C) Weevil
Q42. The process of keeping seeds in water to
check viability is called:
A) Sprouting test
B) Float test
C) Germination test
D) Water test
Answer:
(B) Float test
Q43. Which is the main advantage of using a seed
drill?
A) Saves water
B) Sows seeds at uniform depth and spacing
C) Controls pests
D) Reduces harvesting time
Answer:
(B) Sows seeds at uniform depth and spacing
Q44. Which gas is released during burning of crop
residue?
A) Nitrogen
B) Oxygen
C) Carbon dioxide
D) Ammonia
Answer:
(C) Carbon dioxide
Q45. Which of these is a leguminous crop?
A) Paddy
B) Gram
C) Maize
D) Cotton
Answer:
(B) Gram
Q46. Which is not a modern irrigation method?
A) Sprinkler
B) Drip
C) Canal
D) Furrow
Answer:
(D) Furrow
Q47. In which season are Rabi crops sown?
A) Summer
B) Winter
C) Rainy
D) Autumn
Answer:
(B) Winter
Q48. Which machine is used for both harvesting and
threshing?
A) Seed drill
B) Combine harvester
C) Rotavator
D) Tractor
Answer:
(B) Combine harvester
Q49. Which of these is a traditional tool for
sowing?
A) Seed drill
B) Funnel attached to plough
C) Tractor
D) Combine
Answer:
(B) Funnel attached to plough
Q50. Which is not a benefit of manure over
fertilizers?
A) Improves soil texture
B) Adds organic matter
C) Provides quick nutrient supply
D) Increases water holding capacity
Answer:
(C) Provides quick nutrient supply
Q51. A farmer grows wheat in winter and rice in summer
on the same field. Which practice is he following?
A) Mixed cropping
B) Crop rotation
C) Multiple cropping
D) Monocropping
Answer:
(B) Crop rotation
Q52. A field has too much standing water and the
plants are turning yellow. Which irrigation method could have prevented this?
A) Flood
B) Drip
C) Basin
D) Canal
Answer:
(B) Drip
Q53. A farmer notices that the soil in his field
is hard and has cracks. What should he do before sowing seeds?
A) Harvesting
B) Ploughing
C) Weeding
D) Threshing
Answer:
B) Ploughing
Q54. A farmer wants to grow cotton in sandy soil
with low water availability. Which irrigation method should he choose?
A) Drip
B) Flood
C) Furrow
D) Sprinkler
Answer:
(A) Drip
Q55. A crop requires transplanting. Which crop is
this most likely to be?
A) Wheat
B) Paddy
C) Maize
D) Bajra
Answer:
(B) Paddy
Q56. A farmer uses too much urea. Over time, what
will happen to soil fertility?
A) Increases permanently
B) Decreases
C) No effect
D) Stays same but pH increases
Answer:
(B) Decreases
Q57. Paddy fields are always kept flooded. Which
reason justifies this practice?
A) Paddy plants absorb nutrients only in water
B) Paddy requires anaerobic soil conditions
C) Paddy seeds cannot germinate in dry soil
D) Paddy leaves absorb water directly
Answer: B) Paddy requires anaerobic soil conditions
Q58. A farmer grows groundnut after wheat. What is
the benefit of this?
A) Groundnut fixes nitrogen in soil
B) Groundnut uses less water
C) Groundnut prevents soil erosion
D) Groundnut grows faster than wheat
Answer:
(A) Groundnut fixes nitrogen in soil
Q59. Which tool should a farmer use if he wants
seeds to be sown at equal spacing and depth without bending?
A) Plough
B) Seed drill
C) Hoe
D) Harrow
Answer:
(B) Seed drill
Q60. Sprinkler irrigation is most useful in which
situation?
A) Paddy cultivation
B) Hilly areas with sandy soil
C) Sugarcane field
D) Canal-irrigated plains
Answer:
(B) Hilly areas with sandy soil
Q61. A farmer uses a combine harvester. Which two
operations is he performing at the same time?
A) Sowing and ploughing
B) Harvesting and threshing
C) Irrigation and harvesting
D) Weeding and harvesting
Answer:
(B) Harvesting and threshing
Q62. Which crop rotation would help prevent pest
build-up?
A) Maize → Maize
B) Wheat → Gram
C) Paddy → Paddy
D) Cotton → Cotton
Answer:
(B) Wheat → Gram
Q63. A farmer spreads a green leafy crop in the
field and ploughs it back into the soil. What is he doing?
A) Adding chemical fertilizer
B) Adding green manure
C) Irrigation
D) Weeding
Answer:
(B) Adding green manure
Q64. In drip irrigation, why is water supplied
near the roots instead of spraying over leaves?
A) To avoid leaf burning
B) To minimize evaporation loss
C) To save electricity
D) To prevent pest attack
Answer:
(B) To minimize evaporation loss
Q65. Why does ploughing increase soil fertility?
A) Adds organic matter
B) Increases water-holding capacity
C) Aerates soil for microbes
D) Kills harmful worms
Answer:
(C) Aerates soil for microbes
Q66. Why is loamy soil considered best for crops?
A) It has equal amounts of sand, silt, clay
B) It allows air and retains water
C) It has high nitrogen
D) It has no pests
Answer:
(B) It allows air and retains water
Q67. A farmer finds that his wheat plants have
yellow leaves. Which nutrient is most likely deficient?
A) Phosphorus
B) Potassium
C) Nitrogen
D) Calcium
Answer:
(C) Nitrogen
Q68. In which season will maize grow best in
India?
A) Winter
B) Summer
C) Rainy
D) Autumn
Answer:
(C) Rainy
Q69. A farmer mixes wheat seeds with mustard seeds
before sowing. Which practice is this?
A) Mixed cropping
B) Crop rotation
C) Multiple cropping
D) Monocropping
Answer:
(A) Mixed cropping
Q70. Why do farmers store seeds in airtight
containers?
A) To prevent moisture absorption and pest attack
B) To keep them fresh in colour
C) To improve taste of crops
D) To increase size of seeds
Answer:
(A) To prevent moisture absorption and pest attack
Q71. Why is flooding not suitable for sandy soil?
A) Sandy soil holds too much water
B) Sandy soil drains water quickly
C) Sandy soil becomes clay-like
D) Sandy soil loses nutrients
Answer:
(B) Sandy soil drains water quickly
Q72. A farmer wants to increase organic matter in
soil. Which should he use?
A) Urea
B) Compost
C) Potash
D) DAP fertilizer
Answer:
(B) Compost
Q73. Why is threshing necessary before winnowing?
A) To separate chaff from grains
B) To loosen grains from husk
C) To dry the grains
D) To clean grains
Answer:
(B) To loosen grains from husk
Q74. Which practice prevents soil erosion on
slopes?
A) Strip cropping
B) Contour ploughing
C) Mulching
D) All of these
Answer:
(D) All of these
Q75. Why are leguminous crops often grown after
cereals?
A) They use less fertilizer
B) They grow faster
C) They fix nitrogen in soil
D) They prevent weed growth
Answer:
(C) They fix nitrogen in soil
Q76. Why should over-irrigation be avoided?
A) Increases soil erosion
B) Causes water logging and root rot
C) Reduces crop height
D) Kills beneficial insects
Answer:
(B) Causes water logging and root rot
Q77. Why is crop rotation better than using only
chemical fertilizers?
A) It increases soil pH
B) It maintains soil fertility naturally
C) It reduces harvesting time
D) It uses less water
Answer:
(B) It maintains soil fertility naturally
Q78. Which is the main benefit of modern
irrigation methods over traditional ones?
A) Lower cost
B) Higher water-use efficiency
C) More labour required
D) More weeds
Answer:
(B) Higher water-use efficiency
Q79. Why is harvesting done after crops dry?
A) Easier to cut
B) Avoids fungal growth in storage
C) Gives better taste
D) Reduces seed size
Answer:
(B) Avoids fungal growth in storage
Q80. A farmer plants sugarcane in furrows. What is
the main purpose of furrow method?
A) Save seeds
B) Save water
C) Avoid weeds
D) Make field look neat
Answer:
(B) Save water
Q81. Why is hoe preferred for weeding in small
fields?
A) Removes weeds and loosens soil
B) Cuts crop roots
C) Sows seeds
D) Irrigates crops
Answer:
(A) Removes weeds and loosens soil
Q82. Why is jute harvested before seeds mature?
A) Seeds are harmful
B) Fibres become coarse if plants mature
C) Seeds spoil fibre colour
D) Immature plants give stronger fibres
Answer:
(B) Fibres become coarse if plants mature
Q83. Which practice reduces pest attack naturally?
A) Monocropping
B) Crop rotation
C) Over-irrigation
D) Flooding fields
Answer:
(B) Crop rotation
Q84. Why is paddy not grown in loamy soil without
irrigation?
A) Loamy soil is too dry
B) Paddy needs standing water
C) Paddy seeds germinate only in clay soil
D) Paddy roots cannot grow in loam
Answer:
(B) Paddy needs standing water
Q85. Why is burning crop residue discouraged?
A) Increases soil fertility
B) Releases harmful gases and reduces organic matter
C) Increases crop yield
D) Controls pests permanently
Answer:
(B) Releases harmful gases and reduces organic matter
Q86. Why is superphosphate added to soil?
A) To supply nitrogen
B) To supply phosphorus
C) To supply potassium
D) To supply calcium
Answer:
(B) To supply phosphorus
Q87. Which method of sowing prevents birds from
eating seeds?
A) Broadcasting
B) Drilling with seed drill
C) Hand sowing
D) Dibbler
Answer:
(B) Drilling with seed drill
Q88. Why is threshing done soon after harvesting?
A) To prevent grain loss due to shattering
B) To save labour
C) To clean the grains immediately
D) To dry grains
Answer:
(A) To prevent grain loss due to shattering
Q89. Why are biofertilizers better than chemical
fertilizers?
A) Work faster
B) Improve soil health long term
C) Increase yield instantly
D) Kill all pests
Answer:
(B) Improve soil health long term
Q90. Why is mulching used in crop fields?
A) To add fertilizer
B) To reduce evaporation and weed growth
C) To harvest faster
D) To plough easily
Answer:
(B) To reduce evaporation and weed growth
Q91. Why are canals not suitable for uneven land?
A) Too costly
B) Water cannot flow evenly
C) Increase weeds
D) Use more labour
Answer:
(B) Water cannot flow evenly
Q92. A farmer sees white patches on soil after
water evaporates. What is the problem?
A) Acidic soil
B) Salinity
C) Alkalinity
D) Erosion
Answer:
(B) Salinity
Q93. Which practice reduces soil compaction?
A) Using heavy tractors
B) Reduced tillage
C) Over-irrigation
D) Continuous ploughing
Answer:
(B) Reduced tillage
Q94. Why is sugarcane harvested before flowering?
A) Flowering reduces sugar content
B) Flowers attract pests
C) Flowers dry leaves
D) Flowers increase fibre content
Answer:
(A) Flowering reduces sugar content
Q95. Why should harvested grains be dried before
storage?
A) To make them shiny
B) To avoid fungal and insect attack
C) To remove dust
D) To make them lighter
Answer:
(B) To avoid fungal and insect attack
Q96. Why is intercropping useful?
A) Increases pest attack
B) Makes harvesting easier
C) Reduces spread of pests and diseases
D) Uses more fertilizer
Answer:
(C) Reduces spread of pests and diseases
Q97. Why is wheat sown in October-November in
India?
A) Temperature is low and soil has moisture
B) Day length is longer
C) Rainfall is high
D) Soil is dry and hot
Answer: A) Temperature is low and soil has moisture
Q98. Why is water supplied in the morning or
evening in summer?
A) Farmers are free then
B) To avoid high evaporation loss
C) To cool crops
D) To save electricity
Answer:
(B) To avoid high evaporation loss
Q99. Why is organic manure bulky?
A) Contains large amounts of nutrients
B) Contains less concentrated nutrients but more organic
matter
C) It is not processed
D) Made from small plants only
Answer: B) Contains less concentrated nutrients but more
organic matter
Q100. Why are kharif crops sown at the beginning
of monsoon?
A) They require short days
B) They need high temperature and plenty of water
C) They grow only in winter
D) They need dry climate
Answer:
(B) They need high temperature and plenty of water
Q101. In the complete year, Rabi Crops are grown in
which season?
A)Spring
B) Rainy
C) ummer
D) Winter
Answer:
(D) Winter
Q102. Rhizobium Bacteria which fixes atmospheric
nitrogen are found in nodules growing in:
A) Leaves of leguminous plants
B) Roots of leguminous plants
C) Stem of leguminous plants
D) All options are correct
Answer:
(B) Roots of leguminous plants
Q103. The grain seed is separated from the chaff
in the harvested crop. The process is called as:
A) Seeding
B) Weeding
C) Threshing
D) Ploughing
Answer:
(C) Threshing
Q104. Select the examples of Multicellular
Microorganism from the following:
A) Algae and Fungi
B) Algae and Bacteria
C) Bacteria and Viruses
D) Bacteria and Fungi
Answer:
(A) Algae and Fungi
Q105. What is the name of preservative which is
commonly used in Jam and Pickles?
A) Nitric Acid
B) Copper Sulphate
C) Sodium Benzoate
D) Sodium Chloride
Answer:
(C) Sodium Benzoate
Q106. Select one of these in which Lactobacillus
is commonly found:
A) Curd
B) Cake
C) Bread
D) All of the above
Answer:
(A) Curd
Q107. The process of injecting weak microbes into
a healthy body and producing antibodies to fight against strong microbes is
known as –
A) Vaccination
B) Medication
C) Antibiotics
D) None of them
Answer:
(A) Vaccination
Q108. The microbe for Malaria disease is carried
by –
A) Female Anopheles Mosquito
B) Male Anopheles Mosquito
C) Female Aedes Mosquito
D) Male Aedes Mosquito
Answer:
(A) Female Anopheles Mosquito
Q109. Diseases like chicken pox and polio can be
caused by –
A) Virus
B) Bacteria
C) Fungi
D) Worms
Answer:
(A) Virus
Q110. Coal can be formed from ____
A) Sunlight
B) Steam
C) Fossils
D) Plants
Answer:
(C) Fossils
Q111. The process of growing different crops
alternatively on the same land is called as:
A) Crop Rotation
B) Crop Change
C) Crop Alternation
D) Crop Revolution
Answer:
(A) Crop Rotation
Q112. The natural resource of Sunlight is:
A) Inexhaustible
B) Exhaustible
C) Both of them
D) None of these
Answer:
(A) Inexhaustible
Q113. What are Fossils?
A) Coal mines
B) Dead remains of living organism
C) Living beings
D) Kind of natural resource
Answer:
(B) Dead remains of living organism
Q114. The farm appliance called as “Combine” is a
combination of:
A) Seed drill cum Thresher
B) Plough and Harvester
C) Harvester cum Sprayer
D) Harvester and Thresher
Answer:
(C) Harvester and Thresher
Q115. Medicines that obtain micro-organisms to
kill or stop the growth of bacteria causing microorganisms are called ____
A) Antiseptics
B) Antibodies
C) Antibiotics
D) All of the above
Answer:
(C) Antibiotics
Q116. Which of the following is not a Rabi crop?
A) Wheat
B) Mustard
C) Cotton
D) Gram
Answer:
(C) Cotton
Q117. Which agricultural tool is used for
loosening the soil before sowing seeds?
A) Harrow
B) Hoe
C) Sickle
D) Seed drill
Answer:
(B) Hoe
Q118. The process of supplying water to crops at
regular intervals is called:
A) Harvesting
B) Irrigation
C) Sowing
D) Manuring
Answer:
(B) Irrigation
Q119. Drip irrigation is most suitable for:
A) Paddy
B) Wheat
C) Cotton
D) Fruit plants
Answer:
(D) Fruit plants
Q120. Which of the following is a Kharif crop?
A) Barley
B) Wheat
C) Paddy
D) Gram
Answer:
(C) Paddy
Q121. Which method of irrigation minimizes
evaporation loss the most?
A) Sprinkler
B) Furrow
C) Drip
D) Flood
Answer:
(C) Drip
Q122. Which gas is released during the process of
composting?
A) Oxygen
B) Carbon dioxide
C) Methane
D) Nitrogen
Answer:
(C) Methane
Q123. Which microorganism is used in
biofertilizers to fix nitrogen in soil?
A) Rhizobium
B) Lactobacillus
C) Yeast
D) Penicillium
Answer:
(A) Rhizobium
Q124. The cutting and gathering of mature crops from
the field is called:
A) Sowing
B) Harvesting
C) Weeding
D) Threshing
Answer:
(B) Harvesting
Q125. Which device is used for separating grains
from chaff after threshing?
A) Hoe
B) Winnowing machine
C) Harrow
D) Sprinkler
Answer:
(B) Winnowing machine
126. Which of the following is not an organic
manure?
A) Compost
B) Vermicompost
C) Urea
D) Green manure
Answer:
(C) Urea
Q127. Which of these irrigation methods is best
suited for sandy soils?
A) Flood irrigation
B) Sprinkler irrigation
C) Drip irrigation
D) Furrow irrigation
Answer:
(B) Sprinkler irrigation
Q128. The process of removing unwanted plants from
the crop field is called:
A) Harvesting
B) Weeding
C) Tilling
D) Sowing
Answer:
(B) Weeding
Q129. Which of the following implements is used
for sowing seeds at proper depth and spacing?
A) Hoe
B) Seed drill
C) Plough
D) Leveller
Answer:
(B) Seed drill
Q130. The crop which needs standing water for its
entire growth period is:
A) Wheat
B) Paddy
C) Maize
D) Cotton
Answer:
(B) Paddy
The End
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