ASVAB EXAM 2026–2027
135 QUESTIONS AND CORRECT ANSWERS
ALREADY GRADED A+ | 100% VERIFIED
Military Aptitude & Career Exploration
Department of Defense (DoD) / Armed Services Vocational Aptitude Battery
Key Domains: General Science | Arithmetic Reasoning | Word Knowledge | Paragraph
Comprehension | Mathematics Knowledge | Electronics Information | Auto & Shop Information
| Mechanical Comprehension | Assembling Objects
The official, verified question count for the CAT-ASVAB (Computer Adaptive Test) is exactly 135
multiple-choice questions.
,ANSWER FORMAT: Correct answers are displayed in bold cyan text, accompanied by
rationales explaining logical reasoning and problem-solving strategies. Answer distribution
(A, B, C, D) is intentionally randomized.
DOMAIN I: GENERAL SCIENCE (Questions 1–15)
Question 1. Which planet in our solar system is known as the 'Red Planet'?
A. Venus
B. Jupiter
C. Saturn
D. Mars
✓ Correct Answer: D
Rationale: Mars is called the Red Planet due to iron oxide (rust) on its surface, giving it a reddish
appearance visible from Earth.
Question 2. What is the chemical symbol for gold?
A. Go
B. Gd
C. Ag
D. Au
✓ Correct Answer: D
Rationale: Au is the chemical symbol for gold, derived from the Latin word 'aurum.' Ag is silver
(argentum), Gd is gadolinium.
Question 3. Which gas makes up approximately 78% of Earth's atmosphere?
A. Carbon dioxide
B. Oxygen
C. Argon
D. Nitrogen
✓ Correct Answer: D
Rationale: Nitrogen (N2) comprises about 78% of Earth's atmosphere, oxygen about 21%, argon
about 0.9%, and carbon dioxide about 0.04%.
,Question 4. The process by which plants convert sunlight into food is called:
A. Respiration
B. Photosynthesis
C. Fermentation
D. Transpiration
✓ Correct Answer: B
Rationale: Photosynthesis is the process where plants use sunlight, water, and CO2 to produce
glucose and oxygen. Respiration is the opposite—breaking down glucose for energy.
Question 5. Which subatomic particle has a positive charge?
A. Neutron
B. Photon
C. Electron
D. Proton
✓ Correct Answer: D
Rationale: Protons have a positive charge and are located in the nucleus. Electrons have a
negative charge, neutrons have no charge, and photons are particles of light.
Question 6. What type of rock is formed from cooled magma or lava?
A. Igneous
B. Mineral
C. Metamorphic
D. Sedimentary
✓ Correct Answer: A
Rationale: Igneous rocks form from cooled magma (intrusive, like granite) or lava (extrusive, like
basalt). Sedimentary rocks form from compressed sediments, metamorphic from heat/pressure on
existing rocks.
Question 7. The force that pulls objects toward Earth's center is:
A. Inertia
B. Friction
C. Gravity
D. Magnetism
✓ Correct Answer: C
, Rationale: Gravity is the force that attracts objects toward Earth's center. It depends on mass and
distance. Magnetism affects magnetic materials, friction opposes motion, inertia is resistance to
change in motion.
Question 8. Which organ in the human body is responsible for filtering blood and
producing urine?
A. Liver
B. Kidneys
C. Lungs
D. Spleen
✓ Correct Answer: B
Rationale: Kidneys filter blood, remove waste products, and produce urine. The liver detoxifies
chemicals and produces bile, the spleen filters blood and supports immunity, lungs exchange gases.
Question 9. Sound waves travel fastest through:
A. Water
B. Vacuum
C. Steel
D. Air
✓ Correct Answer: C
Rationale: Sound travels fastest through solids (steel: ~5,960 m/s), slower through liquids (water:
~1,480 m/s), slowest through gases (air: ~343 m/s), and not at all through a vacuum (no medium).
Question 10. The pH scale measures:
A. Acidity or alkalinity
B. Temperature
C. Pressure
D. Density
✓ Correct Answer: A
Rationale: pH measures acidity/alkalinity on a scale of 0-14. pH 7 is neutral, below 7 is acidic,
above 7 is alkaline/basic. Each unit represents a 10-fold change in hydrogen ion concentration.
Question 11. Which type of energy is stored in chemical bonds?
A. Potential energy
B. Kinetic energy
C. Thermal energy
D. Nuclear energy
135 QUESTIONS AND CORRECT ANSWERS
ALREADY GRADED A+ | 100% VERIFIED
Military Aptitude & Career Exploration
Department of Defense (DoD) / Armed Services Vocational Aptitude Battery
Key Domains: General Science | Arithmetic Reasoning | Word Knowledge | Paragraph
Comprehension | Mathematics Knowledge | Electronics Information | Auto & Shop Information
| Mechanical Comprehension | Assembling Objects
The official, verified question count for the CAT-ASVAB (Computer Adaptive Test) is exactly 135
multiple-choice questions.
,ANSWER FORMAT: Correct answers are displayed in bold cyan text, accompanied by
rationales explaining logical reasoning and problem-solving strategies. Answer distribution
(A, B, C, D) is intentionally randomized.
DOMAIN I: GENERAL SCIENCE (Questions 1–15)
Question 1. Which planet in our solar system is known as the 'Red Planet'?
A. Venus
B. Jupiter
C. Saturn
D. Mars
✓ Correct Answer: D
Rationale: Mars is called the Red Planet due to iron oxide (rust) on its surface, giving it a reddish
appearance visible from Earth.
Question 2. What is the chemical symbol for gold?
A. Go
B. Gd
C. Ag
D. Au
✓ Correct Answer: D
Rationale: Au is the chemical symbol for gold, derived from the Latin word 'aurum.' Ag is silver
(argentum), Gd is gadolinium.
Question 3. Which gas makes up approximately 78% of Earth's atmosphere?
A. Carbon dioxide
B. Oxygen
C. Argon
D. Nitrogen
✓ Correct Answer: D
Rationale: Nitrogen (N2) comprises about 78% of Earth's atmosphere, oxygen about 21%, argon
about 0.9%, and carbon dioxide about 0.04%.
,Question 4. The process by which plants convert sunlight into food is called:
A. Respiration
B. Photosynthesis
C. Fermentation
D. Transpiration
✓ Correct Answer: B
Rationale: Photosynthesis is the process where plants use sunlight, water, and CO2 to produce
glucose and oxygen. Respiration is the opposite—breaking down glucose for energy.
Question 5. Which subatomic particle has a positive charge?
A. Neutron
B. Photon
C. Electron
D. Proton
✓ Correct Answer: D
Rationale: Protons have a positive charge and are located in the nucleus. Electrons have a
negative charge, neutrons have no charge, and photons are particles of light.
Question 6. What type of rock is formed from cooled magma or lava?
A. Igneous
B. Mineral
C. Metamorphic
D. Sedimentary
✓ Correct Answer: A
Rationale: Igneous rocks form from cooled magma (intrusive, like granite) or lava (extrusive, like
basalt). Sedimentary rocks form from compressed sediments, metamorphic from heat/pressure on
existing rocks.
Question 7. The force that pulls objects toward Earth's center is:
A. Inertia
B. Friction
C. Gravity
D. Magnetism
✓ Correct Answer: C
, Rationale: Gravity is the force that attracts objects toward Earth's center. It depends on mass and
distance. Magnetism affects magnetic materials, friction opposes motion, inertia is resistance to
change in motion.
Question 8. Which organ in the human body is responsible for filtering blood and
producing urine?
A. Liver
B. Kidneys
C. Lungs
D. Spleen
✓ Correct Answer: B
Rationale: Kidneys filter blood, remove waste products, and produce urine. The liver detoxifies
chemicals and produces bile, the spleen filters blood and supports immunity, lungs exchange gases.
Question 9. Sound waves travel fastest through:
A. Water
B. Vacuum
C. Steel
D. Air
✓ Correct Answer: C
Rationale: Sound travels fastest through solids (steel: ~5,960 m/s), slower through liquids (water:
~1,480 m/s), slowest through gases (air: ~343 m/s), and not at all through a vacuum (no medium).
Question 10. The pH scale measures:
A. Acidity or alkalinity
B. Temperature
C. Pressure
D. Density
✓ Correct Answer: A
Rationale: pH measures acidity/alkalinity on a scale of 0-14. pH 7 is neutral, below 7 is acidic,
above 7 is alkaline/basic. Each unit represents a 10-fold change in hydrogen ion concentration.
Question 11. Which type of energy is stored in chemical bonds?
A. Potential energy
B. Kinetic energy
C. Thermal energy
D. Nuclear energy
