1.
2.
3.
4.
5.
6.
7.
8.
9.
What is the powerhouse of the cell?
o A. Nucleus
o B. Ribosome
o C. Mitochondrion
o D. Chloroplast
Answer: C
Which layer of the Earth is composed of liquid iron
and nickel?
o A. Crust
o B. Mantle
o C. Outer core
o D. Inner core
Answer: C
Which organ system is responsible for transporting
nutrients and oxygen throughout the body?
o A. Respiratory system
o B. Circulatory system
o C. Digestive system
o D. Nervous system
Answer: B
What type of rock is formed from cooling magma or
lava?
o A. Igneous
o B. Sedimentary
o C. Metamorphic
o D. Fossilized
Answer: A
What process allows plants to convert sunlight into
food?
o A. Respiration
o B. Photosynthesis
o C. Fermentation
o D. Digestion
Answer: B
What is the formula for speed?
o A. Speed = Distance × Time
o B. Speed = Distance ÷ Time
o C. Speed = Time ÷ Distance
o D. Speed = Distance + Time
Answer: B
What is the male reproductive organ in plants?
o A. Ovary
o B. Pistil
o C. Stamen
o D. Sepal
Answer: C
What type of motion does a pendulum exhibit?
o A. Rotational
o B. Oscillatory
o C. Translational
o D. Random
Answer: B
What is the primary source of energy for life on
Earth?
o
o
o
o
A. Water
B. Soil
C. Sunlight
D. Oxygen
Answer: C
10. What is the smallest unit of heredity?
 A. DNA
 B. Chromosome
 C. Gene
 D. Cell
Answer: C
11. What is the atomic number of Carbon?
 A. 6
 B. 8
 C. 12
 D. 16
Answer: A
12. What type of bond is formed when electrons are
shared?
 A. Ionic bond
 B. Covalent bond
 C. Metallic bond
 D. Hydrogen bond
Answer: B
13. What is the chemical symbol for Sodium?
 A. S
 B. Na
 C. So
 D. N
Answer: B
14. What is the term for the breaking down of rocks into
smaller pieces?
 A. Erosion
 B. Deposition
 C. Weathering
 D. Transportation
Answer: C
15. What is the most abundant gas in Earth's
atmosphere?
 A. Oxygen
 B. Nitrogen
 C. Carbon Dioxide
 D. Hydrogen
Answer: B
16. What type of wave is sound?
 A. Transverse
 B. Longitudinal
 C. Electromagnetic
 D. Stationary
Answer: B
17. What is the chemical formula for water?
 A. H2O2
 B. H2O


C. O2H
D. HO2
Answer: B
18. What is the unit of electric current?
 A. Volt
 B. Ohm
 C. Ampere
 D. Watt
Answer: C
19. What happens to light when it passes through a
prism?
 A. Reflection
 B. Refraction
 C. Diffraction
 D. Dispersion
Answer: D
20. Which hydrocarbon is known as methane?
 A. C2H6
 B. CH4
 C. C3H8
 D. C4H10
Answer: B
21. What is the largest organ in the human body?
 A. Liver
 B. Skin
 C. Brain
 D. Heart
Answer: B
22. What type of energy is stored in a compressed
spring?
 A. Kinetic energy
 B. Thermal energy
 C. Elastic potential energy
 D. Chemical energy
Answer: C
23. Which planet is known as the "Red Planet"?
 A. Venus
 B. Mars
 C. Jupiter
 D. Saturn
Answer: B
24. What is the universal solvent?
 A. Alcohol
 B. Oil
 C. Water
 D. Acetone
Answer: C
25. What type of lens converges light rays?
 A. Concave lens
 B. Convex lens
 C. Plane mirror
 D. Prism
Answer: B
26. What is the process by which plants release water
vapor through their leaves?
 A. Evaporation
 B. Transpiration
 C. Condensation
 D. Respiration
Answer: B
27. Which gas is released during photosynthesis?
 A. Carbon dioxide
 B. Oxygen
 C. Nitrogen
 D. Methane
Answer: B
28. What is the charge of a proton?
 A. Positive
 B. Negative
 C. Neutral
 D. Variable
Answer: A
29. Which body system is responsible for hormone
production?
 A. Nervous system
 B. Digestive system
 C. Endocrine system
 D. Excretory system
Answer: C
30. What is the boiling point of water at sea level?
 A. 0°C
 B. 50°C
 C. 100°C
 D. 212°C
Answer: C
31. What type of rock is formed under high pressure and
temperature without melting?
 A. Igneous
 B. Sedimentary
 C. Metamorphic
 D. Fossilized
Answer: C
32. What is the main organ of the human excretory
system?
 A. Heart
 B. Lungs
 C. Kidneys
 D. Liver
Answer: C
33. What part of the eye is responsible for controlling
the amount of light that enters?
 A. Cornea
 B. Retina
 C. Pupil
 D. Iris
Answer: D
34. What is the pH value of a neutral solution?
 A. 0
 B. 7
 C. 14
 D. 1
Answer: B
35. What is the basic unit of an element?
 A. Molecule
 B. Compound
 C. Atom
 D. Ion
Answer: C
36. What is the formula for calculating density?
 A. Density = Mass × Volume
 B. Density = Mass ÷ Volume
 C. Density = Volume ÷ Mass
 D. Density = Mass + Volume
Answer: B
37. Which layer of the atmosphere contains the ozone
layer?
 A. Troposphere
 B. Stratosphere
 C. Mesosphere
 D. Thermosphere
Answer: B
38. What is the process by which a liquid turns into a
gas?
 A. Condensation
 B. Sublimation
 C. Evaporation
 D. Precipitation
Answer: C
39. What organelle is known as the "control center" of
the cell?
 A. Nucleus
 B. Ribosome
 C. Mitochondrion
 D. Golgi apparatus
Answer: A
40. What do we call the study of the interactions among
organisms and their environment?
 A. Ecology
 B. Biology
 C. Zoology
 D. Botany
Answer: A
41. What is the second planet from the Sun?
 A. Earth
 B. Venus
 C. Mars
 D. Mercury
Answer: B
42. What is the SI unit of force?




A. Joule
B. Newton
C. Watt
D. Pascal
Answer: B
43. What kind of blood vessel carries blood away from
the heart?
 A. Artery
 B. Vein
 C. Capillary
 D. Alveolus
Answer: A
44. What is the chemical symbol for gold?
 A. Au
 B. Ag
 C. Pb
 D. Fe
Answer: A
45. What phase of matter has a definite volume but no
definite shape?
 A. Solid
 B. Liquid
 C. Gas
 D. Plasma
Answer: B
46. What is the term for the movement of heat through
a solid material?
 A. Conduction
 B. Convection
 C. Radiation
 D. Evaporation
Answer: A
47. What is the smallest particle of a chemical element?
 A. Atom
 B. Molecule
 C. Compound
 D. Ion
Answer: A
48. Which type of energy is associated with motion?
 A. Potential energy
 B. Thermal energy
 C. Kinetic energy
 D. Chemical energy
Answer: C
49. Which element is most abundant in the Earth's
crust?
 A. Silicon
 B. Aluminum
 C. Oxygen
 D. Iron
Answer: C
50. Which organ in the human body filters waste from
the blood?




A. Liver
B. Kidneys
C. Lungs
D. Stomach
Answer: B
51. What is the process by which organisms maintain
stable internal conditions?
1. A. Homeostasis
2. B. Adaptation
3. C. Evolution
4. D. Photosynthesis
Answer: A
52. Which organelle is responsible for protein synthesis?
1. A. Nucleus
2. B. Mitochondrion
3. C. Ribosome
4. D. Lysosome
Answer: C
53. What pigment gives plants their green color?
1. A. Hemoglobin
2. B. Melanin
3. C. Chlorophyll
4. D. Carotene
Answer: C
54. What is the primary site of gas exchange in the
human lungs?
1. A. Bronchi
2. B. Alveoli
3. C. Trachea
4. D. Diaphragm
Answer: B
55. What is the basic structural and functional unit of the
nervous system?
1. A. Brain
2. B. Neuron
3. C. Axon
4. D. Synapse
Answer: B
56. What type of reproduction results in offspring that
are genetically identical to the parent?
1. A. Sexual reproduction
2. B. Binary fission
3. C. Asexual reproduction
4. D. Meiosis
Answer: C
57. What part of the plant is primarily responsible for
water absorption?
1. A. Leaves
2. B. Roots
3. C. Stems
4. D. Flowers
Answer: B
58. What type of tissue connects muscles to bones?
1.
2.
3.
4.
A. Ligaments
B. Cartilage
C. Tendons
D. Nerves
Answer: C
59. What is the name of the process by which cells
divide to produce gametes?
1. A. Mitosis
2. B. Meiosis
3. C. Binary fission
4. D. Cytokinesis
Answer: B
60. What type of symbiotic relationship benefits one
organism without affecting the other?
1. A. Mutualism
2. B. Commensalism
3. C. Parasitism
4. D. Predation
Answer: B
61. What is the main function of red blood cells?
1. A. Fight infections
2. B. Transport oxygen
3. C. Clot blood
4. D. Store energy
Answer: B
62. What is the process by which DNA is copied before
cell division?
1. A. Transcription
2. B. Translation
3. C. Replication
4. D. Mutation
Answer: C
63. What type of vascular tissue transports water in
plants?
1. A. Phloem
2. B. Xylem
3. C. Cambium
4. D. Cortex
Answer: B
64. Which biomolecule is the main source of energy for
living organisms?
1. A. Proteins
2. B. Lipids
3. C. Carbohydrates
4. D. Nucleic acids
Answer: C
65. Which organ in the digestive system absorbs most
nutrients?
1. A. Stomach
2. B. Small intestine
3. C. Large intestine
4. D. Esophagus
Answer: B
66. What is the part of the brain responsible for
coordination and balance?
1. A. Cerebrum
2. B. Cerebellum
3. C. Medulla
4. D. Hypothalamus
Answer: B
67. Which molecule carries genetic information?
1. A. RNA
2. B. DNA
3. C. Protein
4. D. Lipid
Answer: B
68. What is the term for a group of ecosystems that
share similar climates and organisms?
1. A. Habitat
2. B. Biome
3. C. Population
4. D. Community
Answer: B
69. Which structure in the heart prevents backflow of
blood?
1. A. Valves
2. B. Atrium
3. C. Ventricles
4. D. Aorta
Answer: A
70. What is the part of the flower where seeds develop?
1. A. Stigma
2. B. Style
3. C. Ovary
4. D. Sepal
Answer: C
71. What type of muscle is found in the walls of internal
organs?
1. A. Skeletal muscle
2. B. Cardiac muscle
3. C. Smooth muscle
4. D. Voluntary muscle
Answer: C
72. What is the molecule that provides energy for
cellular processes?
1. A. ATP
2. B. DNA
3. C. RNA
4. D. NADPH
Answer: A
73. What is the process of programmed cell death
called?
1. A. Necrosis
2. B. Apoptosis
3. C. Autophagy
4. D. Regeneration
Answer: B
74. What type of consumer only eats plants?
1. A. Herbivore
2. B. Carnivore
3. C. Omnivore
4. D. Decomposer
Answer: A
75. What part of the cell modifies, sorts, and packages
proteins?
1. A. Golgi apparatus
2. B. Ribosome
3. C. Endoplasmic reticulum
4. D. Lysosome
Answer: A
76. What is the unit of electrical resistance?
1. A. Ampere
2. B. Volt
3. C. Ohm
4. D. Watt
Answer: C
77. What is the speed of light in a vacuum?
1. A. 300,000 m/s
2. B. 300,000 km/s
3. C. 300 m/s
4. D. 300 km/s
Answer: B
78. What type of wave is sound?
1. A. Transverse
2. B. Longitudinal
3. C. Electromagnetic
4. D. Stationary
Answer: B
79. Which force opposes the motion of objects through
air?
1. A. Friction
2. B. Drag
3. C. Gravity
4. D. Tension
Answer: B
80. What does Newton's First Law of Motion state?
1. A. Force equals mass times acceleration.
2. B. Every action has an equal and opposite
reaction.
3. C. An object remains at rest or in uniform
motion unless acted upon by an external
force.
4. D. Gravitational force is directly proportional
to mass.
Answer: C
81. What is the SI unit of energy?
1. A. Joule
2. B. Newton
3. C. Pascal
4. D. Calorie
Answer: A
82. Which type of mirror produces an inverted image
when the object is beyond the focal point?
1. A. Plane mirror
2. B. Convex mirror
3. C. Concave mirror
4. D. None of the above
Answer: C
83. What phenomenon causes a pencil to appear bent
when placed in a glass of water?
1. A. Reflection
2. B. Refraction
3. C. Diffraction
4. D. Interference
Answer: B
84. What property of a sound wave determines its pitch?
1. A. Amplitude
2. B. Wavelength
3. C. Frequency
4. D. Speed
Answer: C
85. What type of circuit has only one path for current to
flow?
1. A. Series circuit
2. B. Parallel circuit
3. C. Open circuit
4. D. Short circuit
Answer: A
86. What is the force of attraction between two objects
with mass?
1. A. Magnetism
2. B. Gravity
3. C. Friction
4. D. Centripetal force
Answer: B
87. What is the effect of an increase in the amplitude of
a sound wave?
1. A. Higher pitch
2. B. Lower frequency
3. C. Greater loudness
4. D. Reduced speed
Answer: C
88. Which of the following is an example of potential
energy?
1. A. A rolling ball
2. B. Water stored in a dam
3. C. A moving car
4. D. A running person
Answer: B
89. What is the term for the bending of a wave around
an obstacle?
1. A. Refraction
2. B. Diffraction
3. C. Reflection
4.
D. Interference
Answer: B
90. What is the work done when a 50 N force moves an
object 2 meters in the direction of the force?
1. A. 50 J
2. B. 100 J
3. C. 25 J
4. D. 200 J
Answer: B
91. What is the acceleration due to gravity on Earth?
1. A. 9.8 m/s²
2. B. 10 m/s²
3. C. 5 m/s²
4. D. 1 m/s²
Answer: A
92. Which wave in the electromagnetic spectrum has the
longest wavelength?
1. A. Gamma rays
2. B. X-rays
3. C. Radio waves
4. D. Ultraviolet rays
Answer: C
93. What happens to the current in a circuit if the
resistance is doubled, while the voltage remains
constant?
1. A. Current is halved
2. B. Current is doubled
3. C. Current remains constant
4. D. Current becomes zero
Answer: A
94. What is the property of an object that resists
changes in its motion?
1. A. Mass
2. B. Momentum
3. C. Inertia
4. D. Energy
Answer: C
95. Which quantity is scalar?
1. A. Force
2. B. Velocity
3. C. Distance
4. D. Acceleration
Answer: C
96. What type of wave does not require a medium to
travel?
1. A. Sound wave
2. B. Mechanical wave
3. C. Electromagnetic wave
4. D. Seismic wave
Answer: C
97. What is the formula for calculating work done?
1. A. Work = Force × Distance × Cosine of angle
2. B. Work = Force ÷ Distance
3. C. Work = Mass × Velocity
4.
D. Work = Power × Time
Answer: A
98. Which color of light has the highest energy?
1. A. Red
2. B. Blue
3. C. Green
4. D. Yellow
Answer: B
99. What is the term for materials that do not allow
electricity to flow through them easily?
1. A. Conductors
2. B. Insulators
3. C. Semiconductors
4. D. Resistors
Answer: B
100. What happens to the pressure of a gas when its
volume decreases while temperature remains
constant?
1. A. Pressure decreases
2. B. Pressure increases
3. C. Pressure remains the same
4. D. Pressure becomes zero
Answer: B
101. What is the most abundant gas in Earth's
atmosphere?
1. A. Oxygen
2. B. Nitrogen
3. C. Carbon dioxide
4. D. Argon
Answer: B
102. What is the chemical formula of table salt?
1. A. NaCl
2. B. KCl
3. C. CaCl₂
4. D. MgCl₂
Answer: A
103. What is the pH of a neutral solution?
1. A. 0
2. B. 7
3. C. 14
4. D. 1
Answer: B
104. What type of bond forms when electrons are shared
between atoms?
1. A. Ionic bond
2. B. Covalent bond
3. C. Metallic bond
4. D. Hydrogen bond
Answer: B
105. What is the charge of an electron?
1. A. Positive
2. B. Negative
3. C. Neutral
4.
D. None of the above
Answer: B
106. Which element is known as the "king of chemicals"?
1. A. Carbon
2. B. Sulfur
3. C. Hydrogen
4. D. Oxygen
Answer: B
107. What is the chemical symbol for gold?
1. A. G
2. B. Au
3. C. Ag
4. D. Go
Answer: B
108. Which state of matter has a definite volume but no
definite shape?
1. A. Solid
2. B. Liquid
3. C. Gas
4. D. Plasma
Answer: B
109. What is the term for the smallest unit of an element
that retains its properties?
1. A. Molecule
2. B. Atom
3. C. Ion
4. D. Compound
Answer: B
110. What is the process of converting liquid into gas?
1. A. Condensation
2. B. Evaporation
3. C. Freezing
4. D. Sublimation
Answer: B
111. Which gas is released during photosynthesis?
1. A. Carbon dioxide
2. B. Nitrogen
3. C. Oxygen
4. D. Hydrogen
Answer: C
112. What is the molar mass of water (H₂O)?
1. A. 16 g/mol
2. B. 18 g/mol
3. C. 20 g/mol
4. D. 22 g/mol
Answer: B
113. What type of reaction occurs when two or more
substances combine to form a new compound?
1. A. Decomposition
2. B. Synthesis
3. C. Combustion
4. D. Single replacement
Answer: B
114. What is the chemical formula for glucose?
1.
2.
3.
4.
A. C₂H₄O₂
B. C₆H₁₂O₆
C. CH₄
D. C₃H₆O₃
Answer: B
115. What is the common name for H₂SO₄?
1. A. Hydrochloric acid
2. B. Sulfuric acid
3. C. Nitric acid
4. D. Acetic acid
Answer: B
116. What is the main component of natural gas?
1. A. Propane
2. B. Butane
3. C. Methane
4. D. Ethane
Answer: C
117. What is the term for a mixture in which the
components are evenly distributed?
1. A. Homogeneous mixture
2. B. Heterogeneous mixture
3. C. Colloid
4. D. Suspension
Answer: A
118. Which type of chemical reaction involves the transfer
of electrons?
1. A. Redox reaction
2. B. Decomposition reaction
3. C. Synthesis reaction
4. D. Acid-base reaction
Answer: A
119. What is the periodic table's Group 1 also known as?
1. A. Alkaline earth metals
2. B. Alkali metals
3. C. Noble gases
4. D. Halogens
Answer: B
120. What is a substance that speeds up a chemical
reaction without being consumed?
1. A. Catalyst
2. B. Reactant
3. C. Product
4. D. Solvent
Answer: A
121. What is the solvent in a saltwater solution?
1. A. Salt
2. B. Water
3. C. Both salt and water
4. D. Neither salt nor water
Answer: B
122. What is the main property of noble gases?
1. A. High reactivity
2. B. Non-reactivity
3. C. High boiling point
4.
D. Metallic characteristics
Answer: B
123. What is the chemical name of NaOH?
1. A. Sodium hydroxide
2. B. Sodium oxide
3. C. Sodium hydride
4. D. Sodium bicarbonate
Answer: A
124. What is the process called when a gas changes
directly into a solid?
1. A. Sublimation
2. B. Deposition
3. C. Freezing
4. D. Evaporation
Answer: B
125. What is the atomic number of carbon?
1. A. 12
2. B. 6
3. C. 8
4. D. 14
Answer: B
126. What layer of Earth lies directly below the crust?
1. A. Outer core
2. B. Inner core
3. C. Mantle
4. D. Lithosphere
Answer: C
127. What is the term for the supercontinent that existed
millions of years ago?
1. A. Gondwana
2. B. Pangaea
3. C. Laurasia
4. D. Eurasia
Answer: B
128. Which layer of the atmosphere contains the ozone
layer?
1. A. Troposphere
2. B. Stratosphere
3. C. Mesosphere
4. D. Thermosphere
Answer: B
129. What type of rock is formed from cooled and
solidified magma or lava?
1. A. Sedimentary rock
2. B. Metamorphic rock
3. C. Igneous rock
4. D. Fossil rock
Answer: C
130. What is the main cause of earthquakes?
1. A. Volcanic eruptions
2. B. Movement of tectonic plates
3. C. Tornadoes
4. D. Ocean waves
Answer: B
131. What is the most abundant mineral in Earth's crust?
1. A. Quartz
2. B. Feldspar
3. C. Mica
4. D. Calcite
Answer: B
132. What is the largest ocean on Earth?
1. A. Atlantic Ocean
2. B. Indian Ocean
3. C. Pacific Ocean
4. D. Arctic Ocean
Answer: C
133. What is the term for the process by which rocks are
broken down into smaller pieces?
1. A. Erosion
2. B. Weathering
3. C. Deposition
4. D. Sedimentation
Answer: B
134. What is the name of the boundary where two
tectonic plates collide?
1. A. Divergent boundary
2. B. Convergent boundary
3. C. Transform boundary
4. D. Rift boundary
Answer: B
135. What is the term for molten rock beneath Earth's
surface?
1. A. Lava
2. B. Magma
3. C. Sediment
4. D. Crust
Answer: B
136. What is the primary driver of Earth's water cycle?
1. A. Wind
2. B. Solar energy
3. C. Gravity
4. D. Ocean currents
Answer: B
137. Which type of volcano has gentle slopes and is
primarily built by lava flows?
1. A. Composite volcano
2. B. Shield volcano
3. C. Cinder cone volcano
4. D. Stratovolcano
Answer: B
138. What is the term for the location on Earth's surface
directly above an earthquake's focus?
1. A. Hypocenter
2. B. Epicenter
3. C. Fault line
4. D. Seismic zone
Answer: B
139. Which gas is the primary component of Earth's
atmosphere?
1. A. Oxygen
2. B. Nitrogen
3. C. Carbon dioxide
4. D. Argon
Answer: B
140. What is the name of the instrument used to measure
the strength of an earthquake?
1. A. Barometer
2. B. Seismograph
3. C. Anemometer
4. D. Hydrometer
Answer: B
141. What is the term for the process by which water
moves from plants to the atmosphere?
1. A. Evaporation
2. B. Condensation
3. C. Transpiration
4. D. Precipitation
Answer: C
142. What are the small, solid particles ejected by a
volcano called?
1. A. Lava bombs
2. B. Tephra
3. C. Magma
4. D. Pumice
Answer: B
143. What is the scientific name for the study of Earth's
atmosphere and weather?
1. A. Oceanography
2. B. Geology
3. C. Meteorology
4. D. Astronomy
Answer: C
144. What is the name of the cycle describing the
movement of carbon among Earth's systems?
1. A. Hydrological cycle
2. B. Nitrogen cycle
3. C. Carbon cycle
4. D. Rock cycle
Answer: C
145. Which type of boundary is responsible for the
formation of mid-ocean ridges?
1. A. Convergent boundary
2. B. Divergent boundary
3. C. Transform boundary
4. D. Subduction zone
Answer: B
146. What is the term for a naturally occurring, inorganic
solid with a specific chemical composition?
1. A. Rock
2. B. Mineral
3. C. Ore
4.
D. Fossil
Answer: B
147. What is the main cause of ocean tides?
1. A. Wind
2. B. Earth's rotation
3. C. Gravitational pull of the Moon and Sun
4. D. Seismic activity
Answer: C
148. What is the layer of Earth that generates its magnetic
field?
1. A. Crust
2. B. Mantle
3. C. Outer core
4. D. Inner core
Answer: C
149. Which type of fossil is created when minerals replace
the organic material of an organism?
1. A. Trace fossil
2. B. Mold fossil
3. C. Cast fossil
4. D. Petrified fossil
Answer: D
150. What is the process by which sediment is dropped
and comes to rest?
- A. Erosion
- B. Deposition
- C. Weathering
- D. Transportation
Answer: B