AFCT Practice Questions (2026) — Free Sample Questions with Answers

Answer: B

Oxygen (O₂): O₂ is a molecule, but both atoms are oxygen, so it is still an element.

Water (H₂O): Correct. Water is made of two different elements, hydrogen and oxygen, chemically bonded in a fixed ratio, which is the definition of a compound.

Iron (Fe): Iron is a single element listed on the periodic table.

Neon (Ne): Neon is a noble gas element made of only neon atoms.

A compound contains two or more different elements chemically bonded; a molecule of one element (like O₂) is not a compound.

Answer: C

igneous rock: Igneous rock forms when melted rock (magma or lava) cools and hardens; it requires melting.

sedimentary rock: Sedimentary rock forms at or near the surface from layers of sediment that are compacted and cemented.

metamorphic rock: Correct. "Metamorphic" means changed in form; heat and pressure recrystallize existing rock while it stays solid.

volcanic glass: Volcanic glass, such as obsidian, is an igneous rock formed when lava cools very quickly.

Rock cycle: melting and cooling → igneous; weathering, compaction and cementation → sedimentary; heat and pressure without melting → metamorphic.

Answer: C

Respiratory system: The lungs bring oxygen into the blood, but they do not carry it around the body; the blood vessels of the circulatory system do that.

Digestive system: The digestive system breaks food down and absorbs nutrients into the blood; it does not deliver them to distant cells.

Circulatory system: Correct. The heart pumps blood through arteries, capillaries and veins, delivering oxygen and nutrients to every cell and carrying wastes away.

Nervous system: The nervous system sends electrical signals for control and sensation; it does not transport materials.

The circulatory system (heart, blood, blood vessels) is the body's transport system for oxygen, nutrients and wastes.

Answer: A

1. Fuel used = distance ÷ fuel economy.
2. Fuel used = 280 ÷ 8.
3. 280 ÷ 8 = 35 gallons.

35 gallons: Correct. Gallons = miles ÷ miles per gallon = 280 ÷ 8 = 35.

28 gallons: This divides 280 by 10 instead of by the truck's 8 miles per gallon.

40 gallons: This uses 7 miles per gallon (280 ÷ 7), not the stated 8.

2,240 gallons: This multiplies 280 by 8; miles per gallon must be divided into the distance.

When a rate is given "per gallon," divide the total distance by the rate to get the gallons used.

Answer: B

honest: An honest answer would be clear; the jury's confusion shows the answer was not straightforward.

ambiguous: Correct. Equivocal means open to more than one meaning, often on purpose. Usage: "The senator's equivocal statement pleased both sides."

equal: This is a trap from the "equi-" root; the root suggests two meanings of equal weight, but the word describes an unclear answer, not things that are equal.

deliberate: Deliberate means intentional; an answer can be deliberate and still be clear.

Equivocal = ambiguous, unclear in meaning.

Answer: B

Navajo already had standard words for most of the military equipment in use.: The code talkers had to build a vocabulary by assigning words like "hummingbird" to equipment, so standard terms did not exist.

The language's rare use outside the Navajo Nation helped keep the code secure.: Correct. The passage stresses that Navajo was unwritten and rarely spoken by outsiders, then states the code was never broken, linking the two.

Code talkers worked more slowly than machines but made far fewer errors overall.: The passage says code talkers were far faster than cipher machines, and it never compares error rates.

The Marine Corps stopped using cipher machines once the code talkers were trained.: The passage compares speed only; it never says the machines were abandoned.

A supported conclusion must follow from stated facts. Eliminate choices that contradict the passage or go beyond it. Supporting text: "At the time, Navajo had almost no written form and was spoken by very few people outside the Navajo Nation ... Japanese intelligence officers never broke the code."

Answer: B

Aircrews had to follow strict flight corridors to keep the skies over Berlin safe.: This is a supporting detail from one sentence, not the idea of the whole passage.

Western nations kept a blockaded city supplied through a large, organized airlift.: Correct. Every sentence explains why the airlift was needed, how it worked or how it grew, so this statement covers the whole passage.

The Soviets reopened the land routes because the planes had made the blockade useless.: The passage says the routes reopened in May 1949 but never says why; this is an unsupported cause.

Berlin residents suffered serious shortages of milk and medicine during the winter.: The passage lists milk and medicine as cargo but says nothing about shortages of them.

A main-idea answer must cover the whole passage. Reject choices that restate one detail or add causes the passage never gives. Supporting text: "Rather than force the blockade open with ground troops, the United States and Britain chose to supply the city by air."

Answer: A

1. Add 7 to both sides: $4x=28$.
2. Divide both sides by 4: $x=7$.
3. Check: $4(7)-7=28-7=21$.

$x=7$: Correct. Add 7 to both sides: $4x=28$. Divide by 4: $x=7$. Check: $4(7)-7=21$.

$x=3.5$: This subtracts 7 from 21 instead of adding it: $14÷4=3.5$.

$x=5.25$: This divides 21 by 4 without first undoing the $-7$.

$x=28$: This stops at $4x=28$ and forgets to divide by 4.

Undo operations in reverse order: first addition or subtraction, then multiplication or division.

Answer: C

1. Ohm's law: $I=\frac{V}{R}$
2. Substitute: $I=\frac{12\text{V}}{4\Omega }$
3. $I=3\text{A}$

48 A: This multiplies voltage by resistance (12 × 4); Ohm's law divides voltage by resistance.

0.33 A: This divides resistance by voltage (4 ÷ 12); the ratio is inverted.

3 A: Correct. I = V ÷ R = 12 V ÷ 4 Ω = 3 A.

8 A: This subtracts resistance from voltage (12 − 4), which is not a valid formula.

Ohm's law: V = I × R, so current equals voltage divided by resistance.

Answer: C

Pipe wrench: A pipe wrench has a hook-shaped upper jaw with sharp teeth that bite into round pipe; the jaws in the drawing are smooth and flat.

Locking pliers: Locking pliers have two handles that pivot and lock; the tool shown has a single handle.

Adjustable wrench: Correct. The tool has one fixed jaw and one sliding jaw set by a knurled worm screw in the head, and a single flat handle. That is an adjustable (crescent-type) wrench.

Combination wrench: A combination wrench has a fixed open end and a closed box end of one size; it has no moving jaw or worm screw.

An adjustable wrench has smooth, flat jaws; turning the worm screw slides the lower jaw to fit different sizes of nut or bolt head.

Answer: B

Intake: During intake the piston moves down to draw in the air-fuel mixture; nothing has been compressed yet, so there is nothing to ignite.

Compression: Correct. The spark fires just before the piston reaches top dead center on the compression stroke, so the burning mixture pushes the piston down on the power stroke.

Power: The power stroke is the result of ignition. By the time the piston is moving down on power, the mixture is already burning.

Exhaust: On the exhaust stroke the exhaust valve is open and burned gases are pushed out; firing then would do no work.

Order of strokes: intake, compression, power, exhaust. Ignition occurs at the end of compression, which starts the power stroke.

Answer: B

1. Speed ratio: rpm of B = rpm of A × (teeth on A ÷ teeth on B).
2. rpm of B = 50 × (36 ÷ 12) = 50 × 3 = 150 rpm.
3. Direction: B meshes directly with A, so it turns opposite to A: counterclockwise.

16.7 rpm, counterclockwise: This uses the tooth ratio upside down (50 × 12 ÷ 36). The smaller gear must turn faster, not slower.

150 rpm, counterclockwise: Correct. B turns 36 ÷ 12 = 3 times for each turn of A: 3 × 50 = 150 rpm, and meshed gears turn in opposite directions.

150 rpm, clockwise: The speed is right, but two gears that mesh directly turn in opposite directions; B cannot turn clockwise like A.

50 rpm, counterclockwise: This assumes meshed gears turn at the same rpm. They share the same tooth speed at the contact point, so the gear with fewer teeth spins faster.

Teeth × rpm is the same for meshed gears (T₁N₁ = T₂N₂); the smaller gear turns faster, and directly meshed gears turn in opposite directions.

Answer: A

1. Balance moments about the fulcrum: effort × effort arm = load × load arm.
2. Effort × 6 ft = 120 lb × 2 ft = 240 ft·lb.
3. Effort = 240 ÷ 6 = 40 lb.

40 lb: Correct. Effort × 6 ft = 120 lb × 2 ft, so effort = 240 ÷ 6 = 40 lb. The longer effort arm makes the effort smaller than the load.

60 lb: This divides 120 by 2 (the load arm) instead of using the ratio of the two arms.

240 lb: This is the load moment (120 × 2 = 240 ft·lb), not yet divided by the 6 ft effort arm.

360 lb: This multiplies the load by the ratio upside down (120 × 6 ÷ 2); the effort sits on the long arm, so it must be smaller than the load.

For a balanced lever, effort = load × load arm ÷ effort arm. The side of the fulcrum with the longer arm needs the smaller force.

Answer: A

A: Correct. The two triangles (legs 4 and 3) meet along their long sides to make a 4-by-3 block, and the 4-by-1 strip on top completes a square.

B: Wrong piece size: the strip is twice as wide as the given strip.

C: Extra piece: there are two strips, but only one strip is given.

D: Wrong piece size: the triangles are too short; their short legs are 2 instead of 3 (compare them with the strip).

Use one piece as a ruler: here the strip's long side equals the triangles' long legs, which fixes the size of everything else.

Answer: A

A: Correct. The line leaves the triangle at its square (right-angle) corner, point x, and meets the rectangle at the middle of a long side, point y. The shapes are only turned, never flipped.

B: Wrong attachment point on the triangle: the line starts at a sharp (acute) corner, but point x is the square corner where the two legs meet.

C: Wrong attachment point on the rectangle: the line meets the middle of a short end, but point y is in the middle of a long side.

D: Wrong attachment point on the rectangle: the line meets a corner, but point y is in the middle of a long side.

In connection items, first find exactly where each lettered dot sits (corner, side middle, which side), then check every choice for that spot; turning a shape is allowed.