Free Digital ACT Practice Questions (225 Items) | Test Citadel
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Digital ACT Practice Questions

Access 225 official-caliber practice questions. Filter by subject or difficulty to pinpoint your cognitive blind spots.

Showing 24 of 225 items Page 9 of 10
Science Hard (510)

Based on Table 28, the phenotypic ratio observed in the F2 generation closely approximates: Experiment Context (Dihybrid Inheritance in Pisum sativum): Genetici...

Question #1836 Solve & Check Answer →
Science Hard (520)

What fraction of the F2 seeds display the double-recessive phenotype (green and wrinkled)? Experiment Context (Dihybrid Inheritance in Pisum sativum): Geneticis...

Question #1837 Solve & Check Answer →
Science Hard (580)

The 9:3:3:1 ratio demonstrates Mendel's Law of Independent Assortment, which holds true because: Experiment Context (Dihybrid Inheritance in Pisum sativum): Gen...

Question #1838 Solve & Check Answer →
Science Hard (500)

Based on Table 29, the induced electromotive force (EMF) is: Experiment Context (Electromagnetic Induction in a Wire Coil): Students moved a bar magnet into a 5...

Question #1839 Solve & Check Answer →
Science Hard (560)

Why is the induced EMF exactly 0.00 V when the magnet sits motionless inside the coil? Experiment Context (Electromagnetic Induction in a Wire Coil): Students m...

Question #1840 Solve & Check Answer →
Science Hard (590)

According to Lenz's Law, the direction of the induced current in the coil will always: Experiment Context (Electromagnetic Induction in a Wire Coil): Students m...

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Science Hard (510)

Based on Table 30, across which depth interval is the steepest drop in seawater temperature (the thermocline) observed? Experiment Context (Subtropical Oceanic ...

Question #1842 Solve & Check Answer →
Science Hard (560)

Seawater density increases continuously from 1,024.2 kg/m^3 at the surface to 1,027.9 kg/m^3 at 2,000 m primarily because: Experiment Context (Subtropical Ocean...

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Science Hard (540)

Why does the surface mixed layer (0 to 100 m) maintain a nearly uniform temperature (24.5°C to 23.8°C)? Experiment Context (Subtropical Oceanic Depth Profiles):...

Question #1844 Solve & Check Answer →
Science Hard (510)

Based on Table 31, the relationship between capillary tube internal diameter and the equilibrium rise height of water is: Experiment Context (Capillary Rise of ...

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Science Hard (570)

Capillary rise occurs in glass tubes because: Experiment Context (Capillary Rise of Water in Glass Tubes): Physics students immersed clean vertical borosilicate...

Question #1846 Solve & Check Answer →
Science Hard (600)

If liquid mercury (which has cohesive forces far stronger than adhesive forces to glass) were used instead of water: Experiment Context (Capillary Rise of Water...

Question #1847 Solve & Check Answer →
Science Hard (530)

Comparing Experiment 1 and Experiment 2, doubling [A] while holding [B] constant causes the initial rate to: Experiment Context (Reaction Orders of Reaction 2A ...

Question #1848 Solve & Check Answer →
Science Hard (520)

Comparing Experiment 1 and Experiment 3, doubling [B] while holding [A] constant causes the rate to: Experiment Context (Reaction Orders of Reaction 2A + B -> C...

Question #1849 Solve & Check Answer →
Science Hard (550)

What is the overall rate law for this reaction? Experiment Context (Reaction Orders of Reaction 2A + B -> C): Chemists studied the initial rate of formation of ...

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Science Hard (500)

Based on Table 33, under anaerobic conditions, yeast produced substantially greater quantities of: Experiment Context (Metabolic Byproducts of Saccharomyces cer...

Question #1851 Solve & Check Answer →
Science Hard (580)

Why did the anaerobic culture consume nearly four times more glucose (48.6 g vs 12.4 g) than the aerobic culture? Experiment Context (Metabolic Byproducts of Sa...

Question #1852 Solve & Check Answer →
Science Hard (610)

Under anaerobic conditions, the biological function of converting pyruvate into ethanol and CO2 is to: Experiment Context (Metabolic Byproducts of Saccharomyces...

Question #1853 Solve & Check Answer →
Science Hard (510)

Based on Table 34, doubling the slit separation d at a constant screen distance (from 0.10 mm to 0.20 mm) causes the fringe spacing y to: Experiment Context (In...

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Science Hard (560)

If the red laser (632.8 nm) were replaced with a violet laser (405.0 nm) at d = 0.20 mm and L = 2.0 m, the fringe spacing would: Experiment Context (Interferenc...

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Science Hard (540)

The bright fringes in the interference pattern are produced by: Experiment Context (Interference Fringe Spacing of Laser Light): Students directed a 632.8 nm he...

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Science Hard (500)

Based on Table 35, the ratio r^3 / T^2 across all four moons is: Experiment Context (Orbital Dynamics of the Galilean Moons): Astronomers compiled semi-major ax...

Question #1857 Solve & Check Answer →
Science Hard (520)

If a fifth satellite orbits Jupiter with an orbital period T = 14.3 days, its predicted semi-major axis r would be: Experiment Context (Orbital Dynamics of the ...

Question #1858 Solve & Check Answer →
Science Hard (580)

The value of the constant ratio r^3 / T^2 in a planetary system depends primarily on the: Experiment Context (Orbital Dynamics of the Galilean Moons): Astronome...

Question #1859 Solve & Check Answer →
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