MCQ Collection
Pakistan MCQs
Practice Pakistan questions with answers and explanations.
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Correct Answer: A. Closeness of repeated measurements to one another
Explanation:
Precision describes repeatability.
Measurements can be precise without being accurate.
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Correct Answer: B. Closeness of a measurement to the accepted value
Explanation:
Accuracy describes agreement with the true or accepted value.
Systematic error can reduce accuracy.
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Correct Answer: C. An error that shifts measurements consistently in one direction
Explanation:
Systematic errors often arise from calibration or method bias.
Repeated measurements do not automatically remove them.
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Correct Answer: D. An unpredictable variation among repeated measurements
Explanation:
Random errors cause scatter around a central value.
Repeated measurements and averaging can reduce their effect.
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Correct Answer: D. CAKE
Explanation:
The numbers correspond to C, A, K, and E.
Thus, the word is CAKE.
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Correct Answer: A. 3
Explanation:
Leading zeros are not significant, but trailing zeros after a decimal are.
Thus 4, 5, and the final zero are significant.
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Correct Answer: A. ABINR
Explanation:
Alphabetical order gives A, B, I, N, R.
Therefore, BRAIN becomes ABINR.
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Correct Answer: B. A single vector having the same combined effect
Explanation:
Vector addition replaces multiple vectors with an equivalent single vector.
Its direction and magnitude depend on the original vectors.
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Correct Answer: B. 901
Explanation:
The mapping is 7→9, 8→0, and 9→1.
The code is 901.
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Correct Answer: C. Pythagorean theorem
Explanation:
Perpendicular vector components form a right triangle.
The resultant magnitude is found from the sum of squared components.
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Correct Answer: C. BADCFE
Explanation:
Swap A-B, C-D, and E-F.
This produces BADCFE.
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Correct Answer: D. 3500 m
Explanation:
One kilometre equals 1,000 metres.
Therefore 3.5 km = 3.5×1,000 = 3,500 m.
