Reading Mode - Questions

General Ability and Fire Fighting QUESTION #5598

What is the best extinguishing agent for a Class K fire?

Water
CO2
Wet Chemical✔️
Dry Powder

Correct Answer Logic:

Class K fires involve cooking oils and fats. Wet chemical agents are specifically designed to extinguish these high-temperature grease fires safely.

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Boilers Mechanical Engineering QUESTION #2449

Question 2

Critical speed of a rotating shaft is the shaft speed at which:

$p = \omega_n$ — the rotational speed equals the shaft's natural lateral frequency, causing resonance✔️
The shaft material yields due to torsional stress
The bearing clearance exceeds the shaft deflection
The shaft temperature reaches a critical value

Correct Answer Logic:

The critical speed of a rotating shaft is when $p=\omega_n$, i.e., the spin speed equals the natural frequency of lateral vibration. At this speed, even small imbalance causes large deflections.

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Law QUESTION #5660

Question 3

Which of the following statements is true regarding burden of proof in criminal cases?

General principle is that the witness is to prove the case against the accused.
General principle is that the prosecution is to prove the case against the accused beyond reasonable doubt.✔️
Burden to prove the case beyond doubt often shifts from the prosecution to the accused or the witness.
General principle is that the judge has the power to dispose of the case as he best understands it.

Correct Answer Logic:

The fundamental principle of criminal law is that the prosecution must prove the case against the accused beyond reasonable doubt. The burden of proof rests primarily on the prosecution.

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Pakistan Affairs QUESTION #597

Question 4

Comrade', Newspaper was published by:

Abdul Majid Salik
Maulana Zafar Ali Khan
Maulana Mohammad Ali Jauhar✔️
None of These

Correct Answer Logic:

Maulana Mohammad Ali Jauhar launched the English weekly Comrade in 1911.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3624

Question 5

An 'Allergen' is a substance that:

Causes a disease
Triggers an allergic reaction (hypersensitivity)✔️
Cures a headache
Increases energy

Correct Answer Logic:

Allergens stimulate the immune system to react excessively.

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English QUESTION #493

Question 6

He lacked both the training and the equipment needed in the job.

He lacked both the training and the equipment needed in the job.
He lacked both the training and the equipment needed by the job.
He lacked both the training and the equipment needed on the job.
He lacked both the training and the equipment needed for the job.✔️

Correct Answer Logic:

'Needed for the job' is correct

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Social Studies QUESTION #10028

Question 7

Which feminist perspective places central importance on women's personal lived experiences?

Liberal Feminism
Radical Feminism✔️
Socialist Feminism
Postmodern Feminism

Correct Answer Logic:

Radical feminism emphasizes personal experience, encapsulated in the phrase 'the personal is political'.

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Academic/Professional (Social Sciences) QUESTION #10098

Question 8

Quantitative research methods are most suited to studying:

Deep subjective meanings
Measurable variables and statistical patterns✔️
Small-scale ethnographic detail
Symbolic interpretation only

Correct Answer Logic:

Quantitative methods focus on measurable variables amenable to statistical analysis.

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Law QUESTION #9711

Question 9

Under Article 59, the scope of expert opinion was expanded by Act No. XXXIX of 2023 to include:

Digital forensics generally
Bomb disposal✔️
Psychological profiling
Ballistic analysis

Correct Answer Logic:

Article 59 was amended by Act No. XXXIX of 2023 (s.2) to insert 'or bomb disposal' as an area where expert opinion is relevant.

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Math Physics Chemistry Biology QUESTION #4304

Question 10

Once an action potential reaches the membrane of a skeletal muscle fiber, what is the first event in the contraction process?

Actin and myosin form a cross-bridge
Calcium is pumped back into the sarcoplasmic reticulum
Calcium is released from the sarcoplasmic reticulum✔️
ATP is hydrolyzed by troponin

Correct Answer Logic:

When an action potential arrives, it triggers the sarcoplasmic reticulum to release $Ca^{2+}$ ions, which bind to troponin, moving tropomyosin and allowing cross-bridge formation.

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Electronics Engineering QUESTION #11692

Question 11

An ohmmeter reads a very low resistance ($\approx 0\,\Omega$) across both junctions of a BJT regardless of probe polarity. This indicates the transistor is:

Operating normally in saturation
Open-circuited internally
Short-circuited (damaged) between junctions✔️
A PNP type requiring reverse probing

Correct Answer Logic:

A healthy BJT should show a diode-like forward voltage (~0.6 V) in one direction and near-infinite resistance in reverse for each junction. A reading of near-zero resistance in both directions for a junction indicates an internal short circuit — the device is damaged and must be replaced.

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Reading and Writing (Module-1) QUESTION #10460

Question 12

The chef's ------- approach to spices meant that even the simplest dish arrived bursting with ------- flavor.

timid . . muted
audacious . . unexpected✔️
bland . . predictable
restrained . . subtle

Correct Answer Logic:

A bold ('audacious') approach to seasoning produces 'unexpected' flavor.

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Physics QUESTION #1047

Question 13

An oxygen cylinder (30 L, 18.20 mol) loses some oxygen until gauge pressure drops to 11 atm at 27°C. Mass of oxygen withdrawn is nearly (R = 100/12 J/mol·K, M(O₂) = 32):

0.116 kg
0.156 kg
0.125 kg
0.144 kg✔️

Correct Answer Logic:

Final moles: $pV = nRT\Rightarrow n_f = \frac{(11+1)\times10^5\times0.030}{\frac{100}{12}\times300}=\frac{12\times10^5\times0.030}{2500}=\frac{36000}{2500}=14.4\ \text{mol}$. Moles withdrawn $= 18.20-14.4=3.8\ \text{mol}$. Note: absolute pressure $= 11+1=12\ \text{atm}$. Mass $= 3.8\times32=121.6\ \text{g}\approx 0.125\ \text{kg}$. Closest: option (3) 0.125 kg... but re-checking: $n_f=\frac{12\times1.01\times10^5\times0.030}{(100/12)\times300}=\frac{3.636\times10^4}{2500}=14.54$. Withdrawn $=3.66\ \text{mol}\times32=117\ \text{g}\approx0.116\ \text{kg}$. Answer: option (1).

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Biology Zoology Botany QUESTION #10800

Question 14

RNA polymerase I transcribes which type of RNA in the nucleolus?

rRNA✔️
tRNA
mRNA
siRNA

Correct Answer Logic:

RNA polymerase I is located in the nucleolus and transcribes the large ribosomal RNA precursor (pre-rRNA), which is processed into the 28S, 18S, and 5.8S rRNA components of ribosomes. RNA polymerase II transcribes mRNA (and snRNA, miRNA); RNA polymerase III transcribes tRNA, 5S rRNA, and other small RNAs. This division of labour is unique to eukaryotes; prokaryotes have a single RNA polymerase.

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Paper-I (Pharmaceutics II (Industrial and Quality Control) and Pharmaceutics III (Hospital and Community Pharmacy)) QUESTION #5696

Question 15

In the formula $V_{1}C_{1} = V_{2}C_{2}$, if we dilute $50 \text{ mL}$ of $95\% \text{ v/v}$ Alcohol to $70\% \text{ v/v}$, what is the final volume $V_{2}$?

$36.8 \text{ mL}$
$135.7 \text{ mL}$
$67.8 \text{ mL}$✔️
$50.0 \text{ mL}$

Correct Answer Logic:

Calculation: $50 \times 95 = V_{2} \times 70 \Rightarrow V_{2} = 4750/70 \approx 67.8 \text{ mL}$.

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Ability / HR / Governance / Special Education QUESTION #5655

Question 16

A Ministry needs to release PSDP funds in the 2nd quarter of the financial year for an approved scheme. The Principal Accounting Officer has NOT furnished a certificate of satisfactory implementation of the approved Work Plan for the previous quarter. What does the O.M. require?

Releases may proceed since Work Plan certification is only required for the 3rd and 4th quarters
Releases shall be subject to utilization of funds released earlier and must follow furnishing of a certificate by the PAO regarding satisfactory implementation of the approved Work Plan for the previous quarter✔️
The Financial Adviser may waive the Work Plan certificate if a written justification is provided
Releases can proceed with a post-facto certificate within 30 days

Correct Answer Logic:

All releases during the remaining three-quarters of the financial year shall be made with prior approval of Financial Adviser's Organization in accordance with the approved Cash Plan. The releases shall be subject to utilization of funds released earlier after furnishing a certificate by the PAO regarding satisfactory implementation of the approved Work Plan for the previous quarter.

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Disaster Management QUESTION #6554

Question 17

Which represents the most critical success factor for implementing anticipatory action at scale in Pakistan?

Technology availability
Developing universal triggers, securing forecast-based financing, building institutional capacity, and integrating with existing preparedness systems✔️
International support
Legal framework

Correct Answer Logic:

Section 7.2 identifies multiple requirements for scaling anticipatory action: developing triggers, securing financing mechanisms, capacity building for implementation, and integration with existing systems. Scaling requires addressing all these systemic elements rather than any single factor.

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Pakistan Affairs QUESTION #585

Question 18

Jinnah Papers' were published by:

Z. A. Suleri
Zawwar Hussain Zaidi✔️
Jamil ud Din Ahmad
None of These

Correct Answer Logic:

Dr. Zawwar Hussain Zaidi was the editor-in-chief of the Jinnah Papers project.

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Physics QUESTION #7003

Question 19

A satellite orbits Earth at constant speed $v$. A mass $m$ is ejected from it so that it just barely escapes Earth's gravitational pull. What additional kinetic energy must be given to mass $m$?

$2mv^2$
$mv^2$
$\dfrac{1}{2}mv^2$✔️
$\dfrac{3}{2}mv^2$

Correct Answer Logic:

The satellite is in circular orbit at some radius $r$: $v = \sqrt{GM/r}$, so $v^2 = GM/r$.

Escape speed from radius $r$: $v_e = \sqrt{2GM/r} = v\sqrt{2}$

Extra KE needed $= \frac{1}{2}mv_e^2 - \frac{1}{2}mv^2 = \frac{1}{2}m(2v^2) - \frac{1}{2}mv^2 = \frac{1}{2}mv^2$

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3401

Question 20

'Night Blindness' is an early sign of deficiency in:

Vitamin A✔️
Vitamin D
Vitamin K
Iron

Correct Answer Logic:

Vitamin A (Retinol) is required for the production of rhodopsin in the retina.

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