MCQ Collection
Pakistan MCQs
Practice Pakistan questions with answers and explanations.
Choose an option to check your answer.
Correct Answer: B. 99.7 kPa
Explanation:
PV = nRT, so P = nRT/V.
Substitution gives approximately 99.7 kPa.
Choose an option to check your answer.
Correct Answer: C. 101 kPa
Explanation:
PV = nRT, so P = nRT/V.
Substitution gives approximately 101 kPa.
Choose an option to check your answer.
Correct Answer: D. 11.2 L
Explanation:
Volume at STP = moles × 22.4 L mol⁻¹.
The calculated volume is 11.2 L.
Choose an option to check your answer.
Correct Answer: A. Reverse transcriptase
Explanation:
Reverse transcriptase copies viral RNA into DNA.
The viral DNA can then integrate into the host genome.
Choose an option to check your answer.
Correct Answer: A. 22.4 L
Explanation:
Volume at STP = moles × 22.4 L mol⁻¹.
The calculated volume is 22.4 L.
Choose an option to check your answer.
Correct Answer: B. Reverse transcriptase
Explanation:
Reverse transcriptase copies viral RNA into DNA.
The viral DNA can then integrate into the host genome.
Choose an option to check your answer.
Correct Answer: B. 33.6 L
Explanation:
Volume at STP = moles × 22.4 L mol⁻¹.
The calculated volume is 33.6 L.
Choose an option to check your answer.
Correct Answer: C. Opportunistic infections due to low CD4 count
Explanation:
Loss of helper T cells impairs immune coordination.
Normally controlled organisms can then cause serious disease.
Choose an option to check your answer.
Correct Answer: C. 44.8 L
Explanation:
Volume at STP = moles × 22.4 L mol⁻¹.
The calculated volume is 44.8 L.
Choose an option to check your answer.
Correct Answer: D. Opportunistic infections due to low CD4 count
Explanation:
Loss of helper T cells impairs immune coordination.
Normally controlled organisms can then cause serious disease.
Choose an option to check your answer.
Correct Answer: D. 67.2 L
Explanation:
Volume at STP = moles × 22.4 L mol⁻¹.
The calculated volume is 67.2 L.
Choose an option to check your answer.
Correct Answer: A. Opportunistic infections due to low CD4 count
Explanation:
Loss of helper T cells impairs immune coordination.
Normally controlled organisms can then cause serious disease.
