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100+ General Science MCQs for NDA

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Hello defence lovers! Are you looking for 100+ General Science MCQs for NDA? look no further because, in this blog post, we have bought you the top 100 General Science MCQs to boost your NDA Preparation along with the download link to the PDF format of the questions.

General Science consists of questions from basic concepts of Physics, Chemistry and Biology till class 12th. The questions from this section of the NDA written examination are very easy to solve and do not require deep conceptual knowledge of the concepts, all you need to go through the basic definition, concepts and formulas.

Even though the questions are of easy level but you need to have a thorough practice of the questions in MCQ format to perform well in the exam. In this practice PDF of 100+ General Science MCQs for NDA, we have got all covered!

100+ General Science MCQs for NDA

  1. The chemical name of common salt is:
    a) Sodium chloride
    b) Sodium carbonate
    c) Sodium nitrate
    d) Sodium bicarbonate
  2. The process of conversion of a solid directly into a gas is called:
    a) Sublimation
    b) Condensation
    c) Evaporation
    d) Melting
  3. The unit of electric current is:
    a) Ampere
    b) Volt
    c) Watt
    d) Ohm
  4. The process of separating different components of a liquid mixture by boiling and condensing is called:
    a) Filtration
    b) Distillation
    c) Evaporation
    d) Decantation
  5. Which gas is most abundant in the Earth’s atmosphere?
    a) Nitrogen
    b) Oxygen
    c) Carbon dioxide
    d) Hydrogen
  6. What is the chemical formula for water?
    a) H2O
    b) CO2
    c) NaCl
    d) HCl
  7. Which of the following is an example of a renewable energy source?
    a) Coal
    b) Natural gas
    c) Solar power
    d) Petroleum
  8. What is the SI unit of force?
    a) Newton
    b) Joule
    c) Pascal
    d) Watt
  9. The process by which plants make their own food using sunlight is called:
    a) Photosynthesis
    b) Respiration
    c) Fermentation
    d) Transpiration
  10. The human body’s main source of energy is derived from the metabolism of:
    a) Carbohydrates
    b) Proteins
    c) Fats
    d) Vitamins
  11. Which of the following is an example of a mammal?
    a) Turtle
    b) Eagle
    c) Shark
    d) Lion
  12. What is the chemical symbol for iron?
    a) Fe
    b) Ag
    c) Pb
    d) Cu
  13. What is the primary function of the kidneys in the human body?
    a) Production of bile
    b) Production of insulin
    c) Filtration of blood
    d) Production of red blood cells
  14. What is the main component of the Earth’s core?
    a) Iron
    b) Silicon
    c) Oxygen
    d) Hydrogen
  15. What is the chemical formula for table sugar?
    a) C6H12O6
    b) NaCl
    c) CO2
    d) H2O
  16. Which of the following is a greenhouse gas?
    a) Nitrogen
    b) Oxygen
    c) Carbon dioxide
    d) Hydrogen
  17. What is the largest organ in the human body?
    a) Liver
    b) Brain
    c) Heart
    d) Skin
  18. What is the process by which plants release water vapor into the atmosphere?
    a) Transpiration
    b) Respiration
    c) Photosynthesis
    d) Evaporation
  19. What is the chemical symbol for gold?
    a) Au
    b) Ag
    c) Pt
    d) Cu
  20. Which of the following is a primary color of light?
    a) Red
    b) Green
    c) Yellow
    d) Purple
  21. What is the function of the ozone layer in the Earth’s atmosphere?
    a) It protects the Earth from ultraviolet radiation
    b) It regulates the Earth’s temperature
    c) It produces oxygen for plants
    d) It filters pollutants from the air
  22. What is the smallest unit of an element that retains its chemical properties?
    a) Atom
    b) Molecule
    c) Cell
    d) Ion
  23. What is the chemical symbol for helium?
    a) He
    b) H
    c) O
    d) C
  24. Which of the following is an example of a non-metal?
    a) Iron
    b) Copper
    c) Aluminum
    d) Oxygen
  25. What is the process by which plants convert sunlight into chemical energy?
    a) Photosynthesis
    b) Respiration
    c) Fermentation
    d) Transpiration
  26. What is the pH of a neutral substance?
    a) 7
    b) 1
    c) 14
    d) 0
  27. Which of the following is an example of a simple machine?
    a) Screw
    b) Battery
    c) Motor
    d) Computer
  28. What is the largest planet in our solar system?
    a) Jupiter
    b) Saturn
    c) Mars
    d) Earth
  29. What is the primary function of the respiratory system?
    a) Pumping blood
    b) Digesting food
    c) Exchanging gases
    d) Fighting infection
  30. What is the chemical symbol for sodium?
    a) Na
    b) Ni
    c) Sn
    d) Ne
  31. What is the process by which a solid changes directly into a gas without becoming a liquid?
    a) Sublimation
    b) Condensation
    c) Evaporation
    d) Melting
  32. Which of the following is an example of a conductor of electricity?
    a) Plastic
    b) Wood
    c) Copper
    d) Rubber
  33. What is the main function of white blood cells in the human body?
    a) Carrying oxygen
    b) Fighting infection
    c) Producing hormones
    d) Breaking down food
  34. Which of the following is an example of a fossil fuel?
    a) Natural gas
    b) Solar power
    c) Wind energy
    d) Hydroelectric power
  35. What is the chemical formula for carbon dioxide?
    a) CO2
    b) H2O
    c) NaCl
    d) C6H12O6
  36. What is the SI unit of pressure?
    a) Pascal
    b) Newton
    c) Ampere
    d) Joule
  37. What is the main component of the Earth’s atmosphere?
    a) Nitrogen
    b) Oxygen
    c) Carbon dioxide
    d) Water vapor
  38. What is the function of the red blood cells in the human body?
    a) Carrying oxygen
    b) Fighting infection
    c) Breaking down food
    d) Producing hormones
  39. Which of the following is a renewable source of energy?
    a) Coal
    b) Natural gas
    c) Solar power
    d) Petroleum
  40. What is the chemical symbol for silver?
    a) Ag
    b) Au
    c) Pt
    d) Cu
  41. What is the process by which liquid water changes into water vapor?
    a) Evaporation
    b) Condensation
    c) Sublimation d) Melting
  42. Which of the following is an example of an insulator of electricity?
    a) Copper
    b) Aluminum
    c) Plastic
    d) Glass
  43. What is the main function of the circulatory system in the human body?
    a) Pumping blood
    b) Digesting food
    c) Exchanging gases
    d) Fighting infection
  44. What is the chemical symbol for oxygen?
    a) O
    b) H
    c) He
    d) C
  45. Which of the following is an example of a metal?
    a) Carbon
    b) Oxygen
    c) Iron
    d) Nitrogen
  46. What is the primary function of the digestive system in the human body?
    a) Pumping blood
    b) Exchanging gases
    c) Breaking down food
    d) Fighting infection
  47. What is the chemical symbol for potassium?
    a) K
    b) Na
    c) Ca
    d) Mg
  48. Which of the following is an example of a heterogeneous mixture?
    a) Saltwater
    b) Milk
    c) Air
    d) Sand and water
  49. What is the process by which an organism produces offspring similar to itself?
    a) Reproduction
    b) Respiration
    c) Photosynthesis
    d) Digestion
  50. What is the main component of the Earth’s crust?
    a) Silicon
    b) Iron
    c) Oxygen
    d) Hydrogen
  51. Which of the following is an example of a compound?
    a) Oxygen
    b) Iron
    c) Water
    d) Helium
  52. What is the function of the mitochondria in a cell?
    a) Producing energy
    b) Controlling cell division
    c) Carrying genetic information
    d) Synthesizing proteins
  53. What is the chemical symbol for nitrogen?
    a) N
    b) H
    c) He
    d) O
  54. Which of the following is an example of a vertebrate?
    a) Frog
    b) Butterfly
    c) Spider
    d) Worm
  55. What is the primary function of the nervous system in the human body?
    a) Pumping blood
    b) Digesting food
    c) Exchanging gases
    d) Transmitting signals
  56. What is the chemical symbol for carbon?
    a) C
    b) O
    c) H
    d) N
  57. Which of the following is an example of a homogeneous mixture?
    a) Saltwater
    b) Milk
    c) Air
    d) Sand and water
  58. What is the process by which plants and animals release energy from food?
    a) Respiration
    b) Reproduction
    c) Photosynthesis
    d) Digestion
  59. What is the function of the cell membrane?
    a) Protecting the cell
    b) Controlling cell division
    c) Carrying genetic information
    d) Synthesizing proteins
  60. What is the chemical symbol for hydrogen?
    a) H
    b) O
    c) He
    d) C
  61. Which of the following is an example of an invertebrate?
    a) Frog
    b) Butterfly
    c) Spider
    d) Fish
  62. What is the primary function of the skeletal system in the human body?
    a) Pumping blood
    b) Digesting food
    c) Exchanging gases
    d) Providing support
  63. What is the chemical symbol for calcium?
    a) Ca
    b) Na
    c) K
    d) Mg
  64. Which of the following is an example of a solution?
    a) Saltwater
    b) Milk
    c) Air
    d) Sand and water
  65. What is the process by which plants and animals exchange gases with the environment?
    a) Respiration
    b) Reproduction
    c) Photosynthesis
    d) Digestion
  66. What is the function of the nucleus in a cell?
    a) Controlling cell division
    b) Producing energy
    c) Carrying genetic information
    d) Synthesizing proteins
  67. What is the chemical symbol for oxygen?
    a) O
    b) H
    c) He
    d) C
  68. Which of the following is an example of an arthropod?
    a) Frog
    b) Butterfly
    c) Spider
    d) Fish
  69. What is the primary function of the muscular system in the human body?
    a) Pumping blood
    b) Digesting food
    c) Exchanging gases
    d) Producing movement
  70. What is the chemical symbol for potassium?
    a) K
    b) Na
    c) Ca
    d) Mg
  71. Which of the following is an example of a suspension?
    a) Saltwater
    b) Milk
    c) Air
    d) Sand and water
  72. What is the process by which organisms produce offspring that are different from themselves?
    a) Reproduction
    b) Respiration
    c) Photosynthesis
    d) Digestion
  73. What is the main component of the Earth’s atmosphere?
    a) Nitrogen
    b) Oxygen
    c) Carbon dioxide
    d) Water vapor
  74. What is the chemical symbol for silver?
    a) Ag
    b) Au
    c) Pt
    d) Cu
  75. Which of the following is an example of a metalloid?
    a) Silicon
    b) Oxygen
    c) Iron
    d) Nitrogen
  76. What is the primary function of the respiratory system in the human body?
    a) Pumping blood
    b) Digesting food
    c) Exchanging gases
    d) Fighting infection
  77. What is the chemical symbol for potassium?
    a) K
    b) Na
    c) Ca
    d) Mg
  78. Which of the following is an example of a heterogeneous mixture?
    a) Saltwater
    b) Milk
    c) Air
    d) Sand and water
  79. What is the process by which an organism produces offspring similar to itself?
    a) Reproduction
    b) Respiration
    c) Photosynthesis
    d) Digestion
  80. What is the main component of the Earth’s crust?
    a) Silicon
    b) Iron
    c) Oxygen
    d) Hydrogen
  81. Which of the following is an example of a compound?
    a) Oxygen
    b) Iron
    c) Water
    d) Helium
  82. What is the function of the mitochondria in a cell?
    a) Producing energy
    b) Controlling cell division
    c) Carrying genetic information
    d) Synthesizing proteins
  83. What is the chemical symbol for nitrogen?
    a) N
    b) H
    c) He
    d) O
  1. Which of the following is an example of a vertebrate?
    a) Frog
    b) Butterfly
    c) Spider
    d) Worm
  2. What is the primary function of the nervous system in the human body?
    a) Pumping blood
    b) Digesting food
    c) Exchanging gases
    d) Transmitting signals
  3. What is the chemical symbol for carbon?
    a) C
    b) O
    c) H
    d) N
  4. Which of the following is an example of a homogeneous mixture?
    a) Saltwater
    b) Milk
    c) Air
    d) Sand and water
  5. What is the process by which plants and animals release energy from food?
    a) Respiration
    b) Reproduction
    c) Photosynthesis
    d) Digestion
  6. What is the function of the cell membrane?
    a) Protecting the cell
    b) Controlling cell division
    c) Carrying genetic information
    d) Synthesizing proteins
  7. What is the chemical symbol for hydrogen?
    a) H
    b) O
    c) He
    d) C
  8. Which of the following is an example of an invertebrate?
    a) Frog
    b) Butterfly
    c) Spider
    d) Fish
  9. What is the primary function of the skeletal system in the human body?
    a) Pumping blood
    b) Digesting food
    c) Exchanging gases
    d) Providing support
  10. What is the chemical symbol for calcium?
    a) Ca
    b) Na
    c) K
    d) Mg
  11. Which of the following is an example of a solution?
    a) Saltwater
    b) Milk
    c) Air
    d) Sand and water
  12. What is the process by which plants and animals exchange gases with the environment?
    a) Respiration
    b) Reproduction
    c) Photosynthesis
    d) Digestion
  13. What is the function of the nucleus in a cell?
    a) Controlling cell division
    b) Producing energy
    c) Carrying genetic information
    d) Synthesizing proteins
  14. What is the chemical symbol for oxygen?
    a) O
    b) H
    c) He
    d) C
  15. Which of the following is an example of an arthropod?
    a) Frog
    b) Butterfly
    c) Spider
    d) Fish
  16. What is the primary function of the muscular system in the human body?
    a) Pumping blood
    b) Digesting food
    c) Exchanging gases
    d) Producing movement
  17. What is the chemical symbol for potassium?
    a) K
    b) Na
    c) Ca
    d) Mg
ALSO READ:  100+ English MCQS for NDA

100+ General Science MCQs for NDA Answer Key

Here are the answers to the previous set of multiple-choice questions:

  1. a) Sodium chloride
  2. a) Sublimation
  3. a) Ampere
  4. b) Distillation
  5. a) Nitrogen
  6. a) H2O
  7. c) Solar power
  8. a) Newton
  9. a) Photosynthesis
  10. a) Carbohydrates
  11. d) Lion
  12. a) Fe
  13. c) Filtration of blood
  14. a) Iron
  15. a) C6H12O6
  16. c) Carbon dioxide
  17. d) Skin
  18. a) Transpiration
  19. a) Au
  20. b) Green
  21. a) It protects the Earth from ultraviolet radiation
  22. a) Atom
  23. a) He
  24. d) Oxygen
  25. a) Photosynthesis
  26. a) 7
  27. a) Screw
  28. a) Jupiter
  29. c) Exchanging gases
  30. a) Na
  31. a) Sublimation
  32. c) Copper
  33. b) Fighting infection
  34. a) Natural gas
  35. a) CO2
  36. a) Pascal
  37. a) Nitrogen
  38. a) Carrying oxygen
  39. c) Solar power
  40. a) Ag
  41. a) Evaporation
  42. c) Plastic
  43. a) Pumping blood
  44. a) O
  45. c) Iron
  46. c) Breaking down food
  47. a) K
  48. d) Sand and water
  49. a) Reproduction
  50. a) Silicon
  51. c) Water
  52. a) Producing energy
  53. a) N
  54. a) Frog
  55. d) Transmitting signals
  56. a) C
  57. a) Saltwater
  58. a) Respiration
  59. a) Protecting the cell
  60. a) H
  61. c) Spider
  62. d) Providing support
  63. a) Ca
  64. a) Saltwater
  65. a) Respiration
  66. c) Carrying genetic information
  67. a) O
  68. c) Spider
  69. d) Producing movement
  70. a) K
  71. d) Sand and water
  72. a) Reproduction
  73. a) Nitrogen
  74. a) Ag
  75. a) Silicon
  76. c) Exchanging gases
  77. a) K
  78. d) Sand and water
  79. a) Reproduction
  80. c) Oxygen
  81. c) Water
  82. a) Producing energy
  83. a) N
  84. a) Frog
  85. d) Transmitting signals
  86. a) C
  87. a) Saltwater
  88. a) Respiration
  89. a) Protecting the cell
  90. a) H
  91. c) Spider
  92. d) Providing support
  93. a) Ca
  94. a) Saltwater
  95. a) Respiration
  96. c) Carrying genetic information
  97. a) O
  98. c) Spider
  99. d) Producing movement
  100. a) K

100+ General Science MCQs for NDA PDF Download Link

To download the PDF questions click the link below:

So these were the General Science MCQs for NDA, go through all the questions and practice them thoroughly. Download the PDF and take a printout if you want to practice offline in pen and paper mode. Share the post with your fellow aspirants.

ALSO READ:  Most important chapters for NDA Maths 2024
Gulshan Yadavhttps://defencemaniac.com
Gulshan Yadav is a blogger, freelance content writer and the founder of 'Defence Maniac'. He is a defence enthusiast and thrives to provide his readers the best quality of articles to help them out in their exam preparations with tips, tricks and tutorials.
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