General Science mcq for Competitive Exam

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(Last Updated On: October 20, 2023)
General Science mcq for competitive exam:  General science encompasses a wide range of scientific knowledge and principles that apply to various fields of science. Here are some fundamental concepts and topics in general science:
  1. Scientific Method: The scientific method is a structured approach used by scientists to investigate natural phenomena. It typically involves making observations, formulating hypotheses, conducting experiments, and drawing conclusions.
  2. Biology: Biology is the study of living organisms. It covers topics such as genetics, evolution, ecology, cell biology, and physiology.
  3. Chemistry: Chemistry focuses on the composition, structure, properties, and changes of matter. It includes elements, compounds, chemical reactions, and the periodic table.
  4. Physics: Physics deals with the fundamental forces and properties of the universe, including motion, energy, light, electricity, magnetism, and the laws of thermodynamics.
  5. Astronomy: Astronomy is the study of celestial objects such as stars, planets, galaxies, and the universe as a whole. It explores topics like the Big Bang Theory and the nature of dark matter and dark energy.
  6. Geology: Geology is the study of the Earth’s structure, composition, and processes, including plate tectonics, earthquakes, volcanoes, and the rock cycle.
  7. Environmental Science: Environmental science focuses on the interaction between humans and the environment, including topics like climate change, conservation, and sustainability.
  8. Meteorology: Meteorology is the study of the Earth’s atmosphere, weather patterns, and climate. It involves understanding phenomena like hurricanes, tornadoes, and the greenhouse effect.
  9. Chemical Reactions: This involves understanding how atoms and molecules interact to form new substances in chemical reactions. It includes topics like chemical equations, stoichiometry, and reaction kinetics.
  10. Electricity and Magnetism: This branch of physics deals with the behavior of electric charges and the generation of magnetic fields. It includes topics like circuits, electromagnetism, and electromagnetic waves.
  11. Genetics: Genetics is the study of heredity and the transfer of genetic information from one generation to the next. It encompasses topics like DNA, genes, and inheritance patterns.
  12. Nutrition: Nutrition is the study of how the body processes and uses food for energy and growth. It includes topics like macronutrients, micronutrients, and dietary recommendations.
  13. Ecology: Ecology is the study of the relationships between organisms and their environment. It includes concepts like ecosystems, food chains, and biodiversity.
  14. The Human Body: Understanding the anatomy and physiology of the human body, including the skeletal, muscular, circulatory, and nervous systems, is a crucial part of general science.
  15. Energy Sources: The study of different energy sources, such as fossil fuels, renewable energy, and nuclear energy, is essential for understanding our energy needs and their environmental impact.

These are just a few examples of the wide-ranging topics within general science. Science is a continuously evolving field, and new discoveries are made regularly, expanding our understanding of the natural world.

100 MCQs General Science mcq for competitive exam

Define Present Tense Type, Rules, Chart, 90 MCQs Download PDF Free

 Here are 100 multiple-choice questions (MCQs) about general science:

  1. What is the chemical symbol for gold? a) Go b) Gd c) Au d) Ag
  2. Which gas is most abundant in Earth’s atmosphere? a) Oxygen b) Carbon dioxide c) Nitrogen d) Hydrogen
  3. Who is known as the father of modern physics? a) Isaac Newton b) Albert Einstein c) Galileo Galilei d) Nikola Tesla
  4. What is the chemical formula for water? a) H2O b) CO2 c) O2 d) CH4
  5. Which planet is known as the “Red Planet”? a) Venus b) Mars c) Jupiter d) Saturn
  6. What is the smallest bone in the human body? a) Femur b) Tibia c) Stapes d) Radius
  7. What is the process by which plants make their food using sunlight? a) Photosynthesis b) Respiration c) Transpiration d) Fermentation
  8. Which gas is responsible for the Earth’s ozone layer depletion? a) Carbon dioxide b) Methane c) Chlorofluorocarbons (CFCs) d) Nitrous oxide
  9. Which of the following is a primary color of light? a) Red b) Yellow c) Green d) Black
  10. What is the chemical symbol for iron? a) Ir b) Fe c) In d) Ar
  11. Which of the following is a greenhouse gas? a) Oxygen b) Carbon monoxide c) Carbon dioxide d) Nitrogen
  12. What is the process of a liquid changing into a gas at its boiling point? a) Condensation b) Evaporation c) Sublimation d) Melting
  13. Who is known for the three laws of motion? a) Albert Einstein b) Isaac Newton c) Charles Darwin d) Galileo Galilei
  14. Which planet is often referred to as the “Evening Star” or “Morning Star” due to its brightness? a) Venus b) Mercury c) Mars d) Jupiter
  15. What is the SI unit of electric current? a) Ampere b) Volt c) Watt d) Ohm
  16. What is the chemical symbol for lead? a) Li b) Ld c) Pb d) Pd
  17. What is the process of conversion of sugar into alcohol and carbon dioxide by yeast? a) Photosynthesis b) Fermentation c) Respiration d) Digestion
  18. What is the chemical symbol for silver? a) Ag b) Si c) Sr d) Sn
  19. Who proposed the theory of relativity? a) Isaac Newton b) Albert Einstein c) Max Planck d) Niels Bohr
  20. Which gas do plants absorb from the atmosphere during photosynthesis? a) Oxygen b) Nitrogen c) Carbon dioxide d) Hydrogen
  21. Which subatomic particle has a positive charge? a) Proton b) Electron c) Neutron d) Quark
  22. What is the chemical formula for table salt? a) NaCl b) H2O c) CO2 d) C6H12O6
  23. Which gas do humans exhale when they breathe out? a) Oxygen b) Carbon dioxide c) Nitrogen d) Hydrogen
  24. Who is credited with the discovery of penicillin, the first antibiotic? a) Alexander Fleming b) Louis Pasteur c) Robert Koch d) Jonas Salk
  25. Which part of the human brain is responsible for regulating basic life functions like breathing and heart rate? a) Cerebrum b) Cerebellum c) Medulla oblongata d) Hypothalamus
  26. What is the chemical symbol for potassium? a) K b) Ka c) Pt d) Kr
  27. What is the unit of measurement for frequency? a) Watts b) Volts c) Hertz d) Amperes
  28. What is the study of fossils called? a) Archaeology b) Geology c) Paleontology d) Anthropology
  29. Which planet is known for its beautiful rings? a) Venus b) Mars c) Jupiter d) Saturn
  30. What is the process by which plants lose water vapor through their leaves? a) Photosynthesis b) Transpiration c) Respiration d) Fermentation
  31. Who is known for the theory of natural selection and evolution? a) Charles Darwin b) Isaac Newton c) Albert Einstein d) Gregor Mendel
  32. What is the chemical symbol for hydrogen? a) He b) Ho c) Hg d) H
  33. What is the process of a gas changing into a liquid? a) Evaporation b) Sublimation c) Condensation d) Freezing
  34. Which subatomic particle has no electric charge? a) Proton b) Electron c) Neutron d) Photon
  35. What is the chemical symbol for carbon? a) Ca b) Cb c) Cr d) C
  36. What is the largest organ in the human body? a) Heart b) Brain c) Skin d) Liver
  37. Which gas is essential for respiration in humans and animals? a) Nitrogen b) Carbon dioxide c) Oxygen d) Methane
  38. What is the main component of Earth’s core? a) Iron b) Nickel c) Aluminum d) Copper
  39. Who formulated the laws of planetary motion? a) Johannes Kepler b) Isaac Newton c) Galileo Galilei d) Copernicus
  40. What is the chemical symbol for calcium? a) Cl b) Ce c) Ca d) Co
  41. Which gas is used for extinguishing fires? a) Oxygen b) Carbon dioxide c) Nitrogen d) Carbon monoxide
  42. What is the chemical symbol for helium? a) He b) Hl c) Hee d) H
  43. What is the study of the Earth’s physical structure and substance called? a) Geology b) Ecology c) Meteorology d) Astronomy
  44. Who is known for the theory of general relativity? a) Isaac Newton b) Albert Einstein c) Stephen Hawking d) Max Planck
  45. What is the chemical symbol for sodium? a) Sn b) So c) Sd d) Na
  46. What is the process by which plants and animals exchange gases with the environment? a) Photosynthesis b) Fermentation c) Respiration d) Transpiration
  47. Which gas is known as laughing gas and used in anesthesia? a) Nitrogen b) Carbon dioxide c) Oxygen d) Nitrous oxide
  48. Who is known for his laws of heredity and genetics? a) Charles Darwin b) Louis Pasteur c) Gregor Mendel d) Watson and Crick
  49. Which subatomic particle orbits the nucleus of an atom? a) Proton b) Electron c) Neutron d) Quark
  50. What is the process of a solid changing directly into a gas without becoming a liquid first? a) Evaporation b) Sublimation c) Condensation d) Freezing
  51. Which planet is known as the “Blue Planet” due to its abundant water? a) Venus b) Earth c) Uranus d) Neptune
  52. What is the chemical symbol for copper? a) Cp b) Co c) Cu d) Ca
  53. Who discovered the laws of motion and gravity? a) Isaac Newton b) Galileo Galilei c) Albert Einstein d) Stephen Hawking
  54. Which gas is known for its distinctive rotten egg odor? a) Oxygen b) Carbon monoxide c) Hydrogen d) Hydrogen sulfide
  55. What is the chemical formula for methane, a common natural gas? a) CH4 b) CO2 c) H2O d) C6H12O6
  56. What is the study of the Earth’s weather and climate called? a) Geology b) Ecology c) Meteorology d) Astronomy
  57. Who is known for his laws of motion and the law of universal gravitation? a) Galileo Galilei b) Isaac Newton c) Albert Einstein d) Nikola Tesla
  58. What is the chemical symbol for nitrogen? a) N b) Ni c) Ne d) Na
  59. What is the process of a liquid changing into a solid? a) Evaporation b) Sublimation c) Condensation d) Freezing
  60. Who is known as the founder of modern chemistry? a) Antoine Lavoisier b) Marie Curie c) Dmitri Mendeleev d) Linus Pauling
  61. What is the chemical symbol for oxygen? a) O2 b) O c) Ox d) Ox2
  62. What is the smallest planet in our solar system? a) Earth b) Venus c) Mars d) Mercury
  63. Which gas is known as the “silent killer” because it is odorless and colorless and can be deadly in enclosed spaces? a) Oxygen b) Carbon monoxide c) Carbon dioxide d) Nitrogen
  64. What is the process of a gas changing directly into a solid without becoming a liquid first? a) Evaporation b) Sublimation c) Condensation d) Freezing
  65. What is the chemical symbol for phosphorus? a) Po b) Pt c) Pb d) P
  66. Who is known for the discovery of X-rays? a) Albert Einstein b) Wilhelm Roentgen c) Marie Curie d) Niels Bohr
  67. Which gas do plants release during photosynthesis? a) Oxygen b) Carbon dioxide c) Nitrogen d) Hydrogen
  68. What is the chemical symbol for uranium? a) Un b) Ur c) U d) Ut
  69. What is the process of a solid changing directly into a gas without becoming a liquid first? a) Evaporation b) Sublimation c) Condensation d) Freezing
  70. Who is known for the laws of conservation of mass and the law of definite proportions in chemistry? a) Antoine Lavoisier b) Marie Curie c) Dmitri Mendeleev d) Linus Pauling
  71. Which gas is essential for combustion to occur? a) Carbon dioxide b) Oxygen c) Nitrogen d) Hydrogen
  72. What is the chemical symbol for neon? a) No b) Ne c) Na d) Ni
  73. Who is known for the discovery of the electron and the development of the plum pudding model of the atom? a) J.J. Thomson b) Ernest Rutherford c) Niels Bohr d) Werner Heisenberg
  74. What is the chemical symbol for sulfur? a) Sr b) Su c) Sl d) S
  75. What is the process of two or more elements chemically combining to form a new substance? a) Dissolution b) Sublimation c) Condensation d) Chemical reaction
  76. Who is known for the development of the periodic table of elements? a) Antoine Lavoisier b) Marie Curie c) Dmitri Mendeleev d) Linus Pauling
  77. What is the chemical symbol for argon? a) Ag b) Ar c) Ao d) An
  78. What is the study of the behavior of light called? a) Geology b) Ecology c) Optics d) Astronomy
  79. Who is known for the discovery of radium and polonium and her pioneering research in radioactivity? a) Albert Einstein b) Wilhelm Roentgen c) Marie Curie d) Niels Bohr
  80. What is the chemical symbol for krypton? a) Kp b) Kr c) Kt d) Kn
  81. What is the process of the Earth’s plates moving and interacting with each other called? a) Erosion b) Tectonics c) Volcanism d) Sedimentation
  82. Who is known for his contributions to the understanding of electromagnetic radiation and the quantum theory of matter? a) Albert Einstein b) Werner Heisenberg c) Niels Bohr d) Max Planck
  83. What is the chemical symbol for barium? a) Br b) Ba c) Bi d) Be
  84. What is the study of the Earth’s atmosphere and weather patterns called? a) Geology b) Ecology c) Meteorology d) Optics
  85. Who is known for the discovery of the neutron? a) J.J. Thomson b) Ernest Rutherford c) Niels Bohr d) James Chadwick
  86. What is the chemical symbol for radon? a) Ra b) Rd c) Rn d) Ro
  87. What is the process by which light is bent when it passes from one medium to another? a) Reflection b) Refraction c) Diffraction d) Dispersion
  88. Who is known for his theory of atomic structure and the development of the Bohr model of the atom? a) J.J. Thomson b) Ernest Rutherford c) Niels Bohr d) James Chadwick
  89. What is the chemical symbol for xenon? a) Xe b) Xn c) Xo d) Xa
  90. What is the study of the Earth’s moon and other celestial bodies in the solar system called? a) Geology b) Ecology c) Meteorology d) Astronomy
  91. Who is known for his uncertainty principle in quantum mechanics? a) Albert Einstein b) Werner Heisenberg c) Niels Bohr d) Max Planck
  92. What is the chemical symbol for cesium? a) Ce b) Cs c) Ca d) Co
  93. What is the study of the Earth’s landforms and the processes that shape them called? a) Geology b) Ecology c) Meteorology d) Geomorphology
  94. Who is known for his contributions to the development of the theory of electromagnetism? a) Albert Einstein b) James Clerk Maxwell c) Michael Faraday d) Thomas Edison
  95. What is the chemical symbol for iodine? a) Io b) Id c) Ir d) I
  96. What is the study of the Earth’s oceans and marine life called? a) Geology b) Ecology c) Meteorology d) Oceanography
  97. Who is known for the discovery of the X-ray diffraction technique used to study the structure of crystals and molecules? a) Albert Einstein b) Wilhelm Roentgen c) Marie Curie d) Rosalind Franklin
  98. What is the chemical symbol for tungsten? a) Tg b) Tu c) Tw d) W
  99. What is the study of the Earth’s history and the life forms that existed in the past called? a) Geology b) Ecology c) Paleontology d) Archaeology
  100. Who is known for his theory of black holes and contributions to the understanding of the universe’s structure and evolution? a) Albert Einstein b) Stephen Hawking c) Carl Sagan d) Neil deGrasse Tyson

Answers:

  1. c) Au
  2. c) Nitrogen
  3. b) Albert Einstein
  4. a) H2O
  5. b) Mars
  6. c) Stapes
  7. a) Photosynthesis
  8. c) Chlorofluorocarbons (CFCs)
  9. c) Green
  10. b) Fe
  11. c) Carbon dioxide
  12. a) Condensation
  13. b) Isaac Newton
  14. a) Venus
  15. a) Ampere
  16. c) Pb
  17. b) Fermentation
  18. a) Ag
  19. b) Albert Einstein
  20. c) Carbon dioxide
  21. a) Proton
  22. a) NaCl
  23. b) Carbon dioxide
  24. a) Alexander Fleming
  25. c) Medulla oblongata
  26. a) K
  27. c) Hertz
  28. c) Paleontology
  29. d) Saturn
  30. b) Transpiration
  31. a) Charles Darwin
  32. d) H
  33. b) Sublimation
  34. c) Neutron
  35. d) C
  36. c) Skin
  37. c) Oxygen
  38. a) Iron
  39. a) Johannes Kepler
  40. c) Ca
  41. b) Carbon dioxide
  42. a) He
  43. a) Geology
  44. b) Albert Einstein
  45. d) Na
  46. b) Fermentation
  47. d) Nitrous oxide
  48. c) Gregor Mendel
  49. b) Electron
  50. b) Sublimation
  51. b) Earth
  52. b) Oxygen
  53. b) Isaac Newton
  54. d) Hydrogen sulfide
  55. a) CH4
  56. c) Meteorology
  57. b) Isaac Newton
  58. a) N
  59. b) Sublimation
  60. a) Antoine Lavoisier
  61. b) O
  62. d) Mercury
  63. b) Carbon monoxide
  64. b) Sublimation
  65. d) P
  66. b) Wilhelm Roentgen
  67. a) Oxygen
  68. c) U
  69. b) Sublimation
  70. a) Antoine Lavoisier
  71. b) Oxygen
  72. b) Ne
  73. a) J.J. Thomson
  74. d) S
  75. d) Chemical reaction
  76. c) Dmitri Mendeleev
  77. b) Ar
  78. c) Optics
  79. c) Marie Curie
  80. b) Kr
  81. b) Tectonics
  82. b) Werner Heisenberg
  83. b) Ba
  84. c) Meteorology
  85. d) James Chadwick
  86. c) Rn
  87. b) Refraction
  88. c) Niels Bohr
  89. a) Xe
  90. d) Astronomy
  91. b) Werner Heisenberg
  92. b) Cs
  93. d) Geomorphology
  94. b) James Clerk Maxwell
  95. d) I
  96. d) Oceanography
  97. d) Rosalind Franklin
  98. d) W
  99. c) Paleontology
  100. b) Stephen Hawking

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