MCQ – Class 8 (science)
Q1. What is crop production?
A. Crop production is growing plants for food.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q2. What is agriculture?
A. Agriculture is the practice of farming.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q3. Name two Kharif crops.
A. Rice and maize are Kharif crops.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q4. Name two Rabi crops.
A. Wheat and gram are Rabi crops.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q5. What is ploughing?
A. Ploughing loosens the soil.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q6. Why is soil loosened?
A. It helps roots grow and breathe.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q7. What is sowing?
A. Sowing is planting seeds in soil.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q8. What is manure?
A. Manure improves soil fertility.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q9. What are fertilizers?
A. Fertilizers supply nutrients to crops.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q10. Why is irrigation needed?
A. Irrigation supplies water to crops.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q11. What is agriculture?
A. Agriculture is the practice of growing crops and rearing animals.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q12. What is crop production?
A. Crop production is the process of growing plants on a large scale for food.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q13. Name two main types of crops in India.
A. Kharif crops and Rabi crops.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q14. What are Kharif crops?
A. Crops grown in the rainy season are called Kharif crops.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q15. Give two examples of Kharif crops.
A. Rice and maize are Kharif crops.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q16. What are Rabi crops?
A. Crops grown in winter season are called Rabi crops.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q17. Give two examples of Rabi crops.
A. Wheat and gram are Rabi crops.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q18. What is preparation of soil?
A. Preparation of soil means loosening and turning the soil.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q19. Why is ploughing important?
A. Ploughing helps roots grow deep and improves soil aeration.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q20. What is plough?
A. Plough is a tool used for loosening the soil.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q21. What is sowing?
A. Sowing is the process of planting seeds in the soil.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q22. Why should healthy seeds be selected?
A. Healthy seeds grow into healthy plants.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q23. What is seed drill?
A. Seed drill is a tool used for sowing seeds at equal depth.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q24. What is manure?
A. Manure is organic matter added to soil to increase fertility.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q25. Why is manure useful?
A. Manure improves soil structure and water holding capacity.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q26. What are fertilizers?
A. Fertilizers are chemical substances that supply nutrients to crops.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q27. Give one disadvantage of fertilizers.
A. They can reduce soil fertility over time.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q28. What is irrigation?
A. Irrigation is the supply of water to crops at regular intervals.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q29. Why is irrigation important?
A. Water is needed for growth and nutrient absorption.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q30. Name one traditional irrigation method.
A. Moat is a traditional irrigation method.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q31. Name one modern irrigation method.
A. Sprinkler system is a modern method.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q32. What is weeding?
A. Weeding is removal of unwanted plants from fields.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q33. Why should weeds be removed?
A. They compete with crops for nutrients and water.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q34. Name one weeding tool.
A. Hoe is used for weeding.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q35. What are pesticides?
A. Pesticides protect crops from pests.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q36. What is harvesting?
A. Harvesting is cutting of mature crops.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q37. What is threshing?
A. Threshing separates grains from harvested crops.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q38. What is winnowing?
A. Winnowing separates grains from chaff.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q39. What is storage of grains?
A. Keeping grains safe for future use.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q40. Why proper storage is needed?
A. To protect grains from pests and moisture.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q41. Speed of light in vacuum?
A. 3 × 10^8 m/s
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q42. Unit of force?
A. Newton (N)
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q43. What is Newton’s First Law?
A. A body remains at rest or in uniform motion unless acted upon by an external force.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q44. What is Ohm’s law?
A. V = IR, where I is current and R is resistance.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q45. Unit of electric current?
A. Ampere (A)
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q46. Formula for work done?
A. W = F × d
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q47. Frequency of standard AC in India?
A. 50 Hz
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q48. Define density.
A. Mass per unit volume (ρ = m/V)
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q49. Acceleration due to gravity on Earth?
A. 9.8 m/s²
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q50. Principle of a lever?
A. Law of moments: F1×L1 = F2×L2
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q51. Atomic number of Carbon?
A. 6
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q52. Chemical formula of water?
A. H₂O
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q53. What is an acid?
A. Substance that donates H⁺ ions in solution.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q54. What is a base?
A. Substance that donates OH⁻ ions in solution.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q55. pH of neutral water?
A. 7
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q56. Formula of table salt?
A. NaCl
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q57. Law of conservation of mass?
A. Mass can neither be created nor destroyed in a chemical reaction.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q58. Molar mass of CO₂?
A. 44 g/mol
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q59. What is electrolysis?
A. Breaking of a compound using electricity.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q60. Symbol of Sodium?
A. Na
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q61. Basic unit of life?
A. Cell
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q62. Powerhouse of the cell?
A. Mitochondria
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q63. What is photosynthesis?
A. Process by which plants make food using sunlight.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q64. Largest organ in the human body?
A. Skin
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q65. What is DNA?
A. Deoxyribonucleic acid; carries genetic information.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q66. Blood group system discovered by?
A. Karl Landsteiner
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q67. Function of red blood cells?
A. Carrying oxygen
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q68. Functional unit of kidney?
A. Nephron
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q69. What is a vaccine?
A. A substance used to stimulate immunity against disease.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q70. Hormone that regulates blood sugar?
A. Insulin
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q71. Ozone layer protects us from?
A. Harmful UV rays
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q72. Greenhouse gas responsible for global warming?
A. Carbon dioxide (CO₂)
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q73. Renewable sources of energy?
A. Solar, Wind, Hydro
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q74. Common fossil fuels?
A. Coal, Oil, Natural Gas
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q75. Unit of electric power?
A. Watt
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q76. What does pH scale measure?
A. Acidity or alkalinity
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q77. Water cycle includes?
A. Evaporation, Condensation, Precipitation
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q78. Function of roots?
A. Absorb water and minerals
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q79. Function of leaves?
A. Photosynthesis
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q80. Main component of natural gas?
A. Methane
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q81. Speed of light in vacuum?
A. 3 × 10^8 m/s
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q82. Unit of force?
A. Newton (N)
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q83. What is Newton’s First Law?
A. A body remains at rest or in uniform motion unless acted upon by an external force.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q84. What is Ohm’s law?
A. V = IR, where I is current and R is resistance.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q85. Unit of electric current?
A. Ampere (A)
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q86. Formula for work done?
A. W = F × d
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q87. Frequency of standard AC in India?
A. 50 Hz
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q88. Define density.
A. Mass per unit volume (ρ = m/V)
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q89. Acceleration due to gravity on Earth?
A. 9.8 m/s²
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q90. Principle of a lever?
A. Law of moments: F1×L1 = F2×L2
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q91. Atomic number of Carbon?
A. 6
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q92. Chemical formula of water?
A. H₂O
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q93. What is an acid?
A. Substance that donates H⁺ ions in solution.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q94. What is a base?
A. Substance that donates OH⁻ ions in solution.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q95. pH of neutral water?
A. 7
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q96. Formula of table salt?
A. NaCl
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q97. Law of conservation of mass?
A. Mass can neither be created nor destroyed in a chemical reaction.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q98. Molar mass of CO₂?
A. 44 g/mol
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q99. What is electrolysis?
A. Breaking of a compound using electricity.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q100. Symbol of Sodium?
A. Na
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q101. Basic unit of life?
A. Cell
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q102. Powerhouse of the cell?
A. Mitochondria
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q103. What is photosynthesis?
A. Process by which plants make food using sunlight.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q104. Largest organ in the human body?
A. Skin
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q105. What is DNA?
A. Deoxyribonucleic acid; carries genetic information.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q106. Blood group system discovered by?
A. Karl Landsteiner
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q107. Function of red blood cells?
A. Carrying oxygen
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q108. Functional unit of kidney?
A. Nephron
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q109. What is a vaccine?
A. A substance used to stimulate immunity against disease.
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q110. Hormone that regulates blood sugar?
A. Insulin
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q111. Ozone layer protects us from?
A. Harmful UV rays
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q112. Greenhouse gas responsible for global warming?
A. Carbon dioxide (CO₂)
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q113. Renewable sources of energy?
A. Solar, Wind, Hydro
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q114. Common fossil fuels?
A. Coal, Oil, Natural Gas
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q115. Unit of electric power?
A. Watt
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q116. What does pH scale measure?
A. Acidity or alkalinity
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q117. Water cycle includes?
A. Evaporation, Condensation, Precipitation
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q118. Function of roots?
A. Absorb water and minerals
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q119. Function of leaves?
A. Photosynthesis
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A
Q120. Main component of natural gas?
A. Methane
B. Not related to the question
C. Partially correct statement
D. None of the above
Show Answer
Correct Answer: A