MCQ Collection
MDCAT 2026 MCQs
Practice MDCAT 2026 questions with answers and explanations.
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Correct Answer: C. Frequency
Explanation:
Higher-frequency sound is perceived as higher pitch.
Pitch perception is related to but not identical with frequency.
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Correct Answer: D. 4
Explanation:
POH=-log(1×10^-4).
The result is 4.
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Correct Answer: A. 9
Explanation:
At 25°C, pH+pOH=14.
POH=14-5 = 9.
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Correct Answer: B. 0.40 M
Explanation:
Moles NaOH=0.0200×0.50=0.0100 mol.
The HCl concentration is 0.0100/0.0250=0.40 M.
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Correct Answer: C. Time taken for one complete cycle
Explanation:
The period is measured in seconds.
It is the reciprocal of frequency.
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Correct Answer: D. Number of complete cycles per second
Explanation:
Frequency is measured in hertz.
One hertz means one cycle per second.
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Correct Answer: A. Large-amplitude response when driving frequency matches a natural frequency
Explanation:
At resonance, energy transfer from the driver is especially effective.
Damping limits the amplitude.
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Correct Answer: B. Reduction of oscillation amplitude due to energy loss
Explanation:
Damping removes mechanical energy from an oscillator.
Friction and drag are common causes.
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Correct Answer: C. A disturbance that requires a material medium
Explanation:
Mechanical waves transfer energy through oscillating matter.
Sound and water waves are examples.
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Correct Answer: D. A wave whose particle oscillations are perpendicular to propagation
Explanation:
Transverse waves have crests and troughs.
Waves on strings are common examples.
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Correct Answer: A. A cell using electrical energy to drive a nonspontaneous reaction
Explanation:
Electrolysis requires an external power source.
It can produce metals, gases, or chemical changes.
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Correct Answer: B. At the anode
Explanation:
The mnemonic 'An Ox' identifies oxidation at the anode.
Electrons are produced there.
