MCQ Collection
Pakistan MCQs
Practice Pakistan questions with answers and explanations.
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Correct Answer: C. Polyethene
Explanation:
Organic reactions are predicted from functional groups, reagents and mechanisms.
The stated product or mechanism follows standard organic chemistry.
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Correct Answer: C. 72000 N/C
Explanation:
The electric field of a point charge is E=kq/r².
Substitution gives the stated magnitude.
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Correct Answer: D. Peptide bond
Explanation:
Macromolecular properties depend on bonding, structure and functional groups.
The selected option matches the relevant chemical role.
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Correct Answer: D. 27000 N/C
Explanation:
The electric field of a point charge is E=kq/r².
Substitution gives the stated magnitude.
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Correct Answer: A. Primary structure
Explanation:
Macromolecular properties depend on bonding, structure and functional groups.
The selected option matches the relevant chemical role.
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Correct Answer: A. 11250 N/C
Explanation:
The electric field of a point charge is E=kq/r².
Substitution gives the stated magnitude.
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Correct Answer: B. Secondary protein structure
Explanation:
Macromolecular properties depend on bonding, structure and functional groups.
The selected option matches the relevant chemical role.
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Correct Answer: B. 144000 N/C
Explanation:
The electric field of a point charge is E=kq/r².
Substitution gives the stated magnitude.
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Correct Answer: C. Its three-dimensional structure and function are disrupted
Explanation:
Macromolecular properties depend on bonding, structure and functional groups.
The selected option matches the relevant chemical role.
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Correct Answer: C. 56250 N/C
Explanation:
The electric field of a point charge is E=kq/r².
Substitution gives the stated magnitude.
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Correct Answer: D. They accelerate biological reactions without being consumed overall
Explanation:
Macromolecular properties depend on bonding, structure and functional groups.
The selected option matches the relevant chemical role.
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Correct Answer: D. 0.01 s
Explanation:
The charging or discharging time constant is τ = RC.
Capacitance must be expressed in farads.
