100 multiple choice questions from general science with answer key
Hi guys today we are going to solve 100 MCQ problem from general science. These questions are very helpful from exam point of view and it is also helpful in increasing your knowledge. So let's get deep dive into these questions.
1. Which of the following is the smallest particle in an element?
a. Proton
b. Neutron
c. Electron
d. Atom
Answer: c. Electron
2. What is the process by which plants make their own food called?
a. Respiration
b. Photosynthesis
c. Transpiration
d. Reproduction
Answer: b. Photosynthesis
3. Which gas is the most abundant in Earth's atmosphere?
a. Nitrogen
b. Oxygen
c. Carbon Dioxide
d. Hydrogen
Answer: a. Nitrogen
4. What is the hardest mineral on the Mohs scale?
a. Diamond
b. Quartz
c. Topaz
d. Corundum
Answer: a. Diamond
5. Which of the following is a renewable source of energy?
a. Coal
b. Oil
c. Natural gas
d. Solar power
Answer: d. Solar power
6. What is the largest organ in the human body?
a. Brain
b. Skin
c. Liver
d. Heart
Answer: b. Skin
7. What is the smallest bone in the human body?
a. Femur
b. Ear bone
c. Rib
d. Arm bone
Answer: b. Ear bone
8. Which planet in our solar system has the most moons?
a. Jupiter
b. Saturn
c. Uranus
d. Neptune
Answer: a. Jupiter
9. What is the process by which water changes from a liquid to a gas?
a. Condensation
b. Evaporation
c. Sublimation
d. Melting
Answer: b. Evaporation
10. What is the name of the force that opposes motion between two surfaces that are in contact with each other?
a. Friction
b. Gravity
c. Inertia
d. Velocity
Answer: a. Friction
11. Which of the following is a conductor of electricity?
a. Wood
b. Rubber
c. Copper
d. Plastic
Answer: c. Copper
12. Which of the following is a common gas found in the Earth's atmosphere?
a. Argon
b. Neon
c. Helium
d. Oxygen
Answer: d. Oxygen
13. What is the process by which a solid changes directly into a gas?
a. Sublimation
b. Condensation
c. Evaporation
d. Melting
Answer: a. Sublimation
14. What is the largest organ in the human body?
a. Liver
b. Heart
c. Skin
d. Brain
Answer: c. Skin
15. What is the smallest unit of life?
a. Atom
b. Cell
c. Molecule
d. Organelle
Answer: b. Cell
16. What is the process by which light is bent as it passes through a medium?
a. Reflection
b. Refraction
c. Diffraction
d. Absorption
Answer: b. Refraction
17. Which of the following is an example of potential energy?
a. A moving car
b. A bouncing ball
c. A stretched rubber band
d. A running person
Answer: c. A stretched rubber band
18. What is the name of the force that causes objects to fall towards the Earth?
a. Inertia
b. Gravity
c. Friction
d. Velocity
Answer: b. Gravity
19. What is the process by which a gas changes into a liquid?
a. Condensation
b. Evaporation
c. Sublimation
d. Melting
Answer: a. Condensation
20. Which of the following is an example of a non-renewable resource?
a. Wind power
b. Solar power
c. Natural gas
d. Hydroelectric power
Answer: c. Natural gas
21. What is the term used to describe the number of waves that pass a given point in a given amount of time?
a. Frequency
b. Amplitude
c. Wavelength
d. Period
Answer: a. Frequency
22. Which of the following is a type of electromagnetic radiation with the shortest wavelength?
a. Radio waves
b. Microwaves
c. X-rays
d. Gamma rays
Answer: d. Gamma rays
23. What is the name of the process by which an organism's DNA is copied?
a. Transcription
b. Translation
c. Replication
d. Mutation
Answer: c. Replication
24. What is the term used to describe the study of the function and structure of living organisms?
a. Anatomy
b. Physiology
c. Ecology
d. Genetics
Answer: b. Physiology
25. Which of the following is a type of rock that is formed from cooled lava?
a. Sedimentary rock
b. Metamorphic rock
c. Igneous rock
d. Fossilized rock
Answer: c. Igneous rock
26. What is the name of the process by which water moves from an area of high concentration to an area of low concentration across a selectively permeable membrane?
a. Diffusion
b. Osmosis
c. Active transport
d. Facilitated diffusion
Answer: b. Osmosis
27. Which of the following is an example of a simple machine?
a. Screw
b. Car engine
c. Television
d. Bicycle
Answer: a. Screw
28. What is the name of the process by which a plant produces offspring that are genetically identical to itself?
a. Fertilization
b. Cloning
c. Germination
d. Pollination
Answer: b. Cloning
29. Which of the following is a type of cell division that produces two identical daughter cells?
a. Mitosis
b. Meiosis
c. Fission
d. Fusion
Answer: a. Mitosis
30 .What is the name of the process by which energy is released from glucose in the absence of oxygen?
a. Fermentation
b. Respiration
c. Photosynthesis
d. Transpiration
Answer: a. Fermentation
31. What is the name of the process by which plants use energy from the sun to convert carbon dioxide and water into oxygen and glucose?
a. Fermentation
b. Respiration
c. Photosynthesis
d. Transpiration
Answer: c. Photosynthesis
32. Which of the following is the smallest unit of matter?
a. Atom
b. Molecule
c. Cell
d. Proton
Answer: a. Atom
33. What is the name of the process by which a gas changes into a liquid?
a. Condensation
b. Vaporization
c. Sublimation
d. Melting
Answer: a. Condensation
34. Which of the following is an example of a renewable resource?
a. Coal
b. Oil
c. Solar power
d. Natural gas
Answer: c. Solar power
35. What is the name of the process by which sediment is deposited in a new location?
a. Erosion
b. Deposition
c. Weathering
d. Sedimentation
Answer: b. Deposition
36. Which of the following is the basic unit of life?
a. Cell
b. Molecule
c. Atom
d. Organism
Answer: a. Cell
37. What is the name of the process by which an electric current produces a magnetic field?
a. Electromagnetism
b. Electrification
c. Magnetization
d. Induction
Answer: a. Electromagnetism
38. Which of the following is a type of electromagnetic radiation with the longest wavelength?
a. Radio waves
b. Microwaves
c. X-rays
d. Gamma rays
Answer: a. Radio waves
39. What is the name of the process by which plants release water vapor into the air?
a. Fermentation
b. Respiration
c. Photosynthesis
d. Transpiration
Answer: d. Transpiration
40. Which of the following is a type of energy associated with the motion of an object?
a. Potential energy
b. Kinetic energy
c. Thermal energy
d. Nuclear energy
Answer: b. Kinetic energy
41. What is the name of the process by which the surface of the Earth is broken down over time?
a. Erosion
b. Deposition
c. Weathering
d. Sedimentation
Answer: c. Weathering
42. Which of the following is the process by which a solid changes directly into a gas?
a. Condensation
b. Vaporization
c. Sublimation
d. Melting
Answer: c. Sublimation
43. What is the name of the process by which water is taken up by plant roots and moves through the plant?
a. Diffusion
b. Osmosis
c. Active transport
d. Transpiration
Answer: c. Active transport
44. Which of the following is a type of rock that is formed from layers of sediment?
a. Sedimentary rock
b. Metamorphic rock
c. Igneous rock
d. Fossilized rock
Answer: a. Sedimentary rock
45. What is the name of the process by which an organism's DNA is used to make proteins?
a. Transcription
b. Translation
c. Replication
d. Mutation
Answer: b. Translation
46. Which of the following is an example of a compound?
a. Hydrogen
b. Oxygen
c. Water
d. Helium
Answer: c. Water
47. What is the name of the process by which the Earth's magnetic field changes direction?
a. Magnetization
b. Induction
c. Reversal
d. Flipping
Answer: c. Reversal
48. Which of the following is the force that opposes motion between two surfaces that are in contact?
a. Friction
b. Gravity
c. Inertia
d. Tension
Answer: a. Friction
49. What is the name of the process by which two or more elements combine to form a new substance?
a. Synthesis
b. Decomposition
c. Replacement
d. Displacement
Answer: a. Synthesis
50. Which of the following is the process by which a solid changes into a liquid?
a. Condensation
b. Vaporization
c. Sublimation
d. Melting
Answer: d. Melting
51. What is the name of the process by which a liquid changes into a gas?
a. Condensation
b. Vaporization
c. Sublimation
d. Melting
Answer: b. Vaporization
52. Which of the following is a type of energy associated with the movement of molecules?
a. Potential energy
b. Kinetic energy
c. Thermal energy
d. Nuclear energy
Answer: c. Thermal energy
53. What is the name of the process by which an organism's DNA is copied?
a. Transcription
b. Translation
c. Replication
d. Mutation
Answer: c. Replication
54. Which of the following is an example of a fossil fuel?
a. Solar power
b. Wind power
c. Natural gas
d. Hydroelectric power
Answer: c. Natural gas
55. What is the name of the process by which rocks are broken down into smaller pieces?
a. Erosion
b. Deposition
c. Weathering
d. Sedimentation
Answer: c. Weathering
56. Which of the following is the process by which a gas changes directly into a solid?
a. Condensation
b. Vaporization
c. Sublimation
d. Deposition
Answer: d. Deposition
57. What is the name of the process by which an electric current produces heat?
a. Electromagnetism
b. Electrification
c. Magnetization
d. Joule heating
Answer: d. Joule heating
58. Which of the following is the process by which an electric current produces light?
a. Electromagnetism
b. Electrification
c. Magnetization
d. Electroluminescence
Answer: d. Electroluminescence
59. What is the name of the process by which a liquid changes into a solid?
a. Condensation
b. Vaporization
c. Sublimation
d. Freezing
Answer: d. Freezing
60. Which of the following is a type of energy associated with the position or condition of an object?
a. Potential energy
b. Kinetic energy
c. Thermal energy
d. Nuclear energy
Answer: a. Potential energy
61. Which of the following is the process by which living things convert food into energy?
a. Photosynthesis
b. Respiration
c. Fermentation
d. Digestion
Answer: b. Respiration
62. Which of the following is the smallest unit of matter?
a. Atom
b. Molecule
c. Cell
d. Element
Answer: a. Atom
63. What is the name of the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen?
a. Photosynthesis
b. Respiration
c. Fermentation
d. Digestion
Answer: a. Photosynthesis
64. Which of the following is a measure of how much matter is in an object?
a. Volume
b. Density
c. Mass
d. Weight
Answer: c. Mass
65. What is the name of the process by which water changes from a gas to a liquid?
a. Condensation
b. Vaporization
c. Sublimation
d. Melting
Answer: a. Condensation
66. Which of the following is the process by which an object's position or motion is changed by a force?
a. Work
b. Power
c. Energy
d. Force
Answer: d. Force
67. What is the name of the process by which a liquid changes into a gas at a temperature below its boiling point?
a. Vaporization
b. Evaporation
c. Sublimation
d. Condensation
Answer: b. Evaporation
68. Which of the following is the process by which a gas changes into a liquid?
a. Condensation
b. Vaporization
c. Sublimation
d. Melting
Answer: a. Condensation
69. What is the name of the process by which an electric current produces a magnetic field?
a. Electromagnetism
b. Electrification
c. Magnetization
d. Joule heating
Answer: a. Electromagnetism
70. Which of the following is the process by which a gas changes directly into a liquid?
a. Condensation
b. Vaporization
c. Sublimation
d. Deposition
Answer: a. Condensation
71. What is the name of the process by which a liquid changes into a gas at a temperature above its boiling point?
a. Vaporization
b. Evaporation
c. Sublimation
d. Condensation
Answer: a. Vaporization
72. Which of the following is a type of energy associated with the movement of electrons?
a. Potential energy
b. Kinetic energy
c. Thermal energy
d. Electrical energy
Answer: d. Electrical energy
73. What is the name of the process by which an electric current produces a chemical reaction?
a. Electrolysis
b. Electromagnetism
c. Electrification
d. Joule heating
Answer: a. Electrolysis
74. Which of the following is the process by which two or more substances combine to form a new substance, but no energy is released or absorbed?
a. Exothermic reaction
b. Endothermic reaction
c. Neutralization reaction
d. Synthesis reaction
Answer: d. Synthesis reaction
75. What is the name of the process by which a gas changes directly into a solid without first becoming a liquid?
a. Condensation
b. Vaporization
c. Sublimation
d. Deposition
Answer: c. Sublimation
76. Which of the following is a type of energy associated with the motion of waves?
a. Potential energy
b. Kinetic energy
c. Thermal energy
d. Radiant energy
Answer: d. Radiant energy
77. What is the name of the process by which a solid changes directly into a gas without first becoming a liquid?
a. Condensation
b. Vaporization
c. Sublimation
d. Melting
Answer: c. Sublimation
78. Which of the following is a type of chemical bond that involves the sharing of electrons between atoms?
a. Ionic bond
b. Covalent bond
c. Metallic bond
d. Hydrogen bond
Answer: b. Covalent bond
79. What is the name of the process by which an acid and a base react to produce salt and water?
a. Neutralization
b. Oxidation
c. Reduction
d. Hydrolysis
Answer: a. Neutralization
80. Which of the following is a measure of the amount of space that an object occupies?
a. Volume
b. Density
c. Mass
d. Weight
Answer: a. Volume
81. What is the name of the process by which an element loses electrons and becomes positively charged?
a. Oxidation
b. Reduction
c. Ionization
d. Hydrolysis
Answer: a. Oxidation
82. Which of the following is the process by which energy is transferred through a material without any net displacement of the material itself?
a. Conduction
b. Convection
c. Radiation
d. Absorption
Answer: a. Conduction
83. What is the name of the process by which an element gains electrons and becomes negatively charged?
a. Oxidation
b. Reduction
c. Ionization
d. Hydrolysis
Answer: b. Reduction
84. Which of the following is a type of chemical bond that involves the transfer of electrons from one atom to another?
a. Ionic bond
b. Covalent bond
c. Metallic bond
d. Hydrogen bond
Answer: a. Ionic bond
85. What is the name of the process by which energy is transferred through a fluid by the movement of heated particles?
a. Conduction
b. Convection
c. Radiation
d. Absorption
Answer: b. Convection
86. Which of the following is the process by which light waves are redirected as they pass through a medium?
a. Reflection
b. Refraction
c. Diffraction
d. Absorption
Answer: b. Refraction
87. What is the name of the process by which an element or compound breaks down into simpler substances through the action of heat or electricity?
a. Synthesis
b. Decomposition
c. Combustion
d. Polymerization
Answer: b. Decomposition
88. Which of the following is the measure of the force of gravity on an object?
a. Volume
b. Density
c. Mass
d. Weight
Answer: d. Weight
89. What is the name of the process by which an element or compound reacts with oxygen to produce heat and light?
a. Synthesis
b. Decomposition
c. Combustion
d. Polymerization
Answer: c. Combustion
90. Which of the following is the measure of the amount of matter in an object and the effect of gravity on that matter?
a. Volume
b. Density
c. Mass
d. Weight
Answer: d. Weight
91. Which of the following is a type of organism that produces its own food through photosynthesis?
a. Herbivore
b. Carnivore
c. Omnivore
d. Autotroph
Answer: d. Autotroph
92. What is the name of the process by which liquid water changes into water vapor?
a. Condensation
b. Vaporization
c. Sublimation
d. Melting
Answer: b. Vaporization
93. Which of the following is a type of reaction in which two or more substances combine to form a new compound?
a. Synthesis
b. Decomposition
c. Combustion
d. Polymerization
Answer: a. Synthesis
94. What is the name of the process by which a gas changes into a liquid?
a. Condensation
b. Vaporization
c. Sublimation
d. Melting
Answer: a. Condensation
95. Which of the following is a measure of how tightly packed the matter in an object is?
a. Volume
b. Density
c. Mass
d. Weight
Answer: b. Density
96. What is the name of the process by which light waves bounce off a surface and change direction?
a. Reflection
b. Refraction
c. Diffraction
d. Absorption
Answer: a. Reflection
97. Which of the following is a type of reaction in which a single compound breaks down into two or more simpler substances?
a. Synthesis
b. Decomposition
c. Combustion
d. Polymerization
Answer: b. Decomposition
98. What is the name of the process by which an element or compound reacts with water to produce a new compound?
a. Synthesis
b. Decomposition
c. Hydrolysis
d. Polymerization
Answer: c. Hydrolysis
99. Which of the following is a type of organism that feeds on other organisms?
a. Herbivore
b. Carnivore
c. Omnivore
d. Autotroph
Answer: b. Carnivore
100. What is the name of the process by which a liquid changes into a solid?
a. Condensation
b. Vaporization
c. Sublimation
d. Freezing
Answer: d. Freezing
I hope you have enjoyed these questions. Next time I will come with some more knowledgeable topic.
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