MCQ Collection
MDCAT 2026 MCQs
Practice MDCAT 2026 questions with answers and explanations.
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Correct Answer: B. Make future instructions clearer and verify understanding.
Explanation:
The identified cause is misunderstanding rather than time or class size.
Clearer instructions and confirmation directly target that cause.
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Correct Answer: C. Install controls and investigate the source of excess emissions.
Explanation:
The violation requires both corrective control and diagnosis.
The other options avoid rather than solve the problem.
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Correct Answer: A. The same temperature
Explanation:
Thermodynamic quantities describe heat, work and internal energy.
The selected statement follows their definitions and the first law.
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Correct Answer: B. Mole of substance
Explanation:
Thermodynamic quantities describe heat, work and internal energy.
The selected statement follows their definitions and the first law.
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Correct Answer: C. brief but clear
Explanation:
'Concise' describes communication that uses few words without losing clarity.
The time-saving context supports this meaning.
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Correct Answer: D. very careful
Explanation:
'Meticulous' describes great attention to small details.
A very careful person checks work precisely.
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Correct Answer: A. obscure
Explanation:
In this sense, 'transparent' means clear or readily understood.
'Obscure' means unclear or difficult to understand.
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Correct Answer: B. make less severe
Explanation:
'Alleviate' means to reduce pain, difficulty, or severity.
The policy is expected to lessen the burden.
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Correct Answer: C. 0.5 Hz
Explanation:
Frequency and period are reciprocals.
f = 1/T.
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Correct Answer: D. 0.25 Hz
Explanation:
Frequency and period are reciprocals.
f = 1/T.
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Correct Answer: A. 200 J
Explanation:
For constant pressure, work done by the gas is PΔV.
Substitution gives the stated value.
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Correct Answer: B. 200 J
Explanation:
For constant pressure, work done by the gas is PΔV.
Substitution gives the stated value.