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100+ Free AFCT Practice Questions

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What is the purpose of a vehicle's differential?

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2026 Statistics

Key Facts: AFCT Exam

120

Total Questions

8 subtests

Free

Exam Cost

Active duty only

~50K

Annual Test-Takers

Service members

2.5 hrs

Test Duration

All subtests

1 month

First Retake Wait

6 months after

The AFCT has 120 questions across 8 subtests completed in ~150 minutes. Same content and scoring as the ASVAB CAT. Taken at base education centers, free for all active-duty personnel. Retake policy: 1 month after first attempt, then 6 months for subsequent retakes. Higher scores can qualify you for reclassification into new MOS/ratings with better promotion potential or bonuses. ~50,000 service members take the AFCT annually.

Sample AFCT Practice Questions

Try these sample questions to test your AFCT exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which of the following is the primary gas in Earth's atmosphere?
A.Oxygen
B.Carbon dioxide
C.Nitrogen
D.Argon
Explanation: Nitrogen makes up approximately 78% of Earth's atmosphere by volume. Oxygen is the second most abundant at about 21%, with argon at 0.93% and carbon dioxide at 0.04%. This atmospheric composition has been relatively stable for hundreds of millions of years.
2What is the function of mitochondria in a cell?
A.Protein synthesis
B.Energy production (ATP)
C.Cell division
D.Waste removal
Explanation: Mitochondria are the powerhouses of the cell, responsible for producing adenosine triphosphate (ATP) through cellular respiration. They convert glucose and oxygen into usable energy. Each cell can contain hundreds to thousands of mitochondria depending on energy demands.
3Which type of rock is formed from cooled magma or lava?
A.Sedimentary
B.Metamorphic
C.Igneous
D.Fossiliferous
Explanation: Igneous rocks form when molten rock (magma underground or lava on the surface) cools and solidifies. Examples include granite (intrusive/slow cooling) and basalt (extrusive/fast cooling). The word 'igneous' comes from the Latin word for fire.
4What is the speed of light in a vacuum, approximately?
A.186,000 miles per hour
B.186,000 miles per second
C.300,000 miles per second
D.300,000 kilometers per hour
Explanation: The speed of light in a vacuum is approximately 186,000 miles per second (or about 300,000 kilometers per second). This is a fundamental constant in physics, denoted as 'c,' and is the maximum speed at which energy and information can travel.
5In the human body, which organ is primarily responsible for filtering blood and producing urine?
A.Liver
B.Kidneys
C.Pancreas
D.Spleen
Explanation: The kidneys filter approximately 200 liters of blood daily, removing waste products, excess water, and electrolytes to produce urine. Each kidney contains about one million nephrons, which are the functional filtering units. The kidneys also regulate blood pressure and produce erythropoietin for red blood cell production.
6Which element has the chemical symbol Fe?
A.Fluorine
B.Francium
C.Iron
D.Fermium
Explanation: Iron has the chemical symbol Fe, derived from the Latin word 'ferrum.' Iron is the most widely used metal, essential for steel production, and is the fourth most abundant element in Earth's crust. In the human body, iron is crucial for hemoglobin in red blood cells.
7What is the process by which plants convert sunlight into chemical energy?
A.Respiration
B.Fermentation
C.Photosynthesis
D.Transpiration
Explanation: Photosynthesis is the process by which plants, algae, and some bacteria convert sunlight, carbon dioxide, and water into glucose and oxygen. The reaction occurs primarily in chloroplasts using chlorophyll. The overall equation is: 6CO₂ + 6H₂O + light energy → C₆H₁₂O₆ + 6O₂.
8What causes tides on Earth?
A.Wind patterns over the ocean
B.Earth's rotation alone
C.Gravitational pull of the Moon and Sun
D.Underwater volcanic activity
Explanation: Tides are primarily caused by the gravitational pull of the Moon on Earth's oceans, with a secondary contribution from the Sun. The Moon's gravity creates a tidal bulge on the side of Earth nearest to it and another on the opposite side. Spring tides (extra high) occur when the Sun and Moon align; neap tides (moderate) occur when they are at right angles.
9In physics, what is the SI unit of force?
A.Joule
B.Watt
C.Newton
D.Pascal
Explanation: The Newton (N) is the SI unit of force, defined as the force required to accelerate a 1-kilogram mass at 1 meter per second squared (1 N = 1 kg·m/s²). It is named after Sir Isaac Newton. One Newton is approximately the weight of a small apple on Earth.
10Which layer of Earth's atmosphere contains the ozone layer?
A.Troposphere
B.Stratosphere
C.Mesosphere
D.Thermosphere
Explanation: The stratosphere, which extends from about 12 to 50 kilometers above Earth's surface, contains the ozone layer. The ozone layer absorbs most of the Sun's harmful ultraviolet (UV) radiation, protecting life on Earth. The ozone concentration peaks at approximately 20-25 km altitude.

About the AFCT Exam

The AFCT is an in-service retake of the ASVAB administered to active-duty military personnel who want to improve their AFQT score or line scores for reclassification into a different Military Occupational Specialty (MOS), rating, or Air Force Specialty Code (AFSC). It contains the same subtests as the ASVAB CAT and is scored identically.

Questions

120 scored questions

Time Limit

2 hours 30 minutes

Passing Score

AFQT 31+ (varies by branch/MOS)

Exam Fee

Free (military) (Department of Defense / Base Education Centers)

AFCT Exam Content Outline

~23%

Verbal (WK + PC)

Word Knowledge and Paragraph Comprehension — vocabulary and reading skills

~25%

Mathematics (AR + MK)

Arithmetic Reasoning and Mathematics Knowledge — applied and theoretical math

~30%

Science & Technical (GS + EI + MC)

General Science, Electronics Information, Mechanical Comprehension

~22%

Auto & Shop Information (AS)

Automotive systems, shop tools, and maintenance practices

How to Pass the AFCT Exam

What You Need to Know

  • Passing score: AFQT 31+ (varies by branch/MOS)
  • Exam length: 120 questions
  • Time limit: 2 hours 30 minutes
  • Exam fee: Free (military)

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

AFCT Study Tips from Top Performers

1Identify which line scores you need for your target MOS and focus on those specific subtests first
2Review your previous ASVAB score report to find your weakest subtests — those offer the most room for improvement
3Practice arithmetic reasoning word problems daily — this subtest impacts the most line scores
4For Electronics Information, master Ohm's law (V = IR) and basic circuit analysis — these appear frequently
5Use military-specific examples to study mechanical comprehension: aircraft hydraulics, vehicle engines, and weapons systems
6Take full-length timed practice tests to build stamina for the 2.5-hour exam session

Frequently Asked Questions

What is the difference between the AFCT and the ASVAB?

The AFCT and ASVAB test the same content areas and use the same scoring system. The key difference is that the ASVAB is taken before enlistment at MEPS, while the AFCT is taken by active-duty service members at base education centers. The AFCT allows you to improve your AFQT and line scores for MOS reclassification or reenlistment purposes.

How often can I retake the AFCT?

You can retake the AFCT 1 month after your first attempt. After that, you must wait 6 months between subsequent retakes. Your most recent score replaces the previous one. Coordinate with your base education center to schedule your test.

Will improving my AFCT score help me change my MOS?

Yes. Each MOS, rating, or AFSC requires specific line scores (combinations of subtest scores). If your current line scores don't qualify you for a desired job, improving them through the AFCT can open reclassification opportunities. Check your branch's reclassification requirements for the specific line scores needed.

How do I sign up to take the AFCT?

Contact your base education center or Army Education Center to schedule the AFCT. The test is free for all active-duty personnel. You'll need your military ID and may need your commander's approval depending on your branch's policy. Some bases offer walk-in testing while others require appointments.

What subtests are on the AFCT?

The AFCT has 8 subtests: General Science (GS), Arithmetic Reasoning (AR), Word Knowledge (WK), Paragraph Comprehension (PC), Mathematics Knowledge (MK), Electronics Information (EI), Auto & Shop Information (AS), and Mechanical Comprehension (MC). These subtests produce your AFQT score and various line scores used for job qualification.