Reading Mode - Questions

Acid strength of hydrides:
Down any group, acid strength increases due to weakening of E–H bond. Therefore:
$\text{H}_2\text{Se} > \text{H}_2\text{S}$ (Se is below S)

So saying $\text{H}_2\text{S} > \text{H}_2\text{Se}$ is incorrect — it reverses the correct trend.

HI > HBr > HCl is correct (bond strength decreases down group 17). $\text{H}_2\text{Te} > \text{H}_2\text{S}$ is also correct.

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Disaster Management QUESTION #6562

Question 3646

What makes gender-disaggregated data collection essential for effective DRR rather than just good practice?

International requirements
It reveals differential vulnerabilities, capacities, and needs that would otherwise remain invisible, enabling targeted and effective interventions✔️
Statistical completeness
Donor expectations

Correct Answer Logic:

Section 13.1 emphasizes gender-disaggregated data to identify specific vulnerabilities. Without disaggregated data, DRR interventions risk being designed for 'average' populations, missing critical gender-specific vulnerabilities (GBV risks, caregiving burdens, resource access) that require targeted responses.

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General Knowledge QUESTION #8281

Question 3647

Who, together with Robert Cailliau, is credited with inventing the World Wide Web (WWW)?

Laiszlo Netzjer
Tom Burns
Tim Berners Lee✔️
Fred Zukerburg

Correct Answer Logic:

Tim Berners Lee invented the World Wide Web in 1989.

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MCQs Section QUESTION #4894

Question 3648

A controversial figure throughout most of his public life, the Black leader Marcus Garvey advocated _____ the possibility of freedom.

that some Blacks return to Africa, the land that, to him, symbolized the possibility of freedom✔️
that some Blacks return to the African land symbolizing the possibility of freedom to him
that some Blacks return to Africa which was the land which symbolized the possibility of freedom to him
some Black's returning to Africa which was the land that to him symbolized the possibility of freedom

Correct Answer Logic:

The subjunctive 'return' (not 'returns' or 'returned') is correctly used after 'advocated that.' The appositive 'the land that, to him, symbolized the possibility of freedom' is precise and well-placed. Options B and C create awkward relative clause chains. Options D and E use incorrect possessive or gerund forms.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3212

Question 3649

'Insulin' lowers blood glucose by:

Promoting glucose uptake by cells✔️
Breaking down glycogen in the liver
Increasing fat breakdown
Decreasing protein synthesis

Correct Answer Logic:

Insulin acts as a 'key' to let glucose enter the cells.

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Physics QUESTION #1026

Question 3650

The kinetic energies of cars A and B are 100 J and 225 J. Car A stops after 1000 m and car B stops after 1500 m. The ratio $F_A/F_B$ is:

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

Correct Answer Logic:

By work-energy theorem: $F \cdot d = KE$. So $F_A = \frac{100}{1000} = 0.1\ \text{N}$ and $F_B = \frac{225}{1500} = 0.15\ \text{N}$. Ratio: $\frac{F_A}{F_B} = \frac{0.1}{0.15} = \frac{2}{3}$. Wait: $\frac{0.1}{0.15}=\frac{2}{3}$. Answer is option (4) = $\frac{2}{3}$... re-checking: $\frac{100/1000}{225/1500}=\frac{0.1}{0.15}=\frac{2}{3}$. Correct option index: 3.

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Math Physics Chemistry Biology QUESTION #4292

Question 3651

Why are thick filaments unable to bind with thin filaments in a relaxed muscle fiber?

Actin blocks the myosin binding site
Tropomyosin blocks the myosin binding site✔️
Troponin blocks the myosin binding site
Tropomyosin blocks the troponin binding site

Correct Answer Logic:

In a relaxed muscle, tropomyosin covers the myosin-binding sites on actin filaments, preventing cross-bridge formation. Calcium ions ($Ca^{2+}$) are required to move tropomyosin away.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3414

Question 3652

Water is considered a 'Polar Solvent' because:

It is found at the poles
It has a partial positive and partial negative charge✔️
It is very cold
It does not mix with anything

Correct Answer Logic:

The oxygen atom is electronegative, creating a dipole.

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Civil / Architecture QUESTION #2341

Question 3653

In structural dynamics, the damped natural frequency $\omega_d$ of a SDOF system with critical damping ratio $\xi$ and undamped natural frequency $\omega_n$ is:

$\omega_d = \omega_n (1 + \xi)$
$\omega_d = \omega_n \sqrt{1 - \xi^2}$✔️
$\omega_d = \omega_n \sqrt{1 + \xi^2}$
$\omega_d = \omega_n (1 - \xi)$

Correct Answer Logic:

The damped natural frequency is $\omega_d = \omega_n \sqrt{1 - \xi^2}$. For typical structural damping ($\xi = 0.02$ to $0.05$), $\omega_d \approx \omega_n$. At critical damping ($\xi = 1.0$), $\omega_d = 0$ and the system returns to equilibrium without oscillating.

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Pakistan Affairs QUESTION #294

Question 3654

Which statement best describes the overall trend in Pak-India diplomatic relations?

Continuous peace
Uninterrupted cooperation
Amicable resolution
Periods of tension, conflict, and normalization efforts✔️

Correct Answer Logic:

Relations have been characterized by a cycle of conflict, cold peace, and dialogue.+1

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General Knowledge QUESTION #8693

Question 3655

Insulin is secreted by which organ in the human body?

Liver
Pancreas✔️
Kidneys
Small Intestine

Correct Answer Logic:

Insulin is produced by the beta cells of the pancreas.

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Nursing QUESTION #9140

Question 3656

A primigravida at 41+3 weeks is admitted for post-term pregnancy management. Bishop score is 4. CTG is reactive. Amniotic fluid index (AFI) is 6 cm. What is the MOST appropriate next step?

Discharge home with daily kick counts only
Emergency cesarean section due to post-term status
Cervical ripening with prostaglandins followed by induction of labor✔️
Conservative management until 42 weeks with twice-weekly NST

Correct Answer Logic:

Post-term Pregnancy Management ($\geq 42$ weeks; post-dates $\geq 41$ weeks):

This patient:

41+3 weeks = post-dates (risk period begins)
Bishop score 4 = unfavorable cervix (score $\leq 6$)
AFI 6 cm = borderline oligohydramnios (normal: $8{-}24\,\text{cm}$; oligohydramnios: $\leq 5\,\text{cm}$)
Reactive CTG = reassuring currently

Risks of post-term pregnancy:

Placental insufficiency, meconium aspiration
Macrosomia, shoulder dystocia
Oligohydramnios, cord compression
Perinatal mortality increases after 41 weeks

Management: Most guidelines recommend induction of labor by 41–42 weeks. With unfavorable cervix (Bishop score 4), cervical ripening first (Prostaglandin E₂ gel/insert or misoprostol) then oxytocin induction.

AFI trending down is additional reason not to wait further. Conservative management is inappropriate here.

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Physics QUESTION #7076

Question 3657

A simple pendulum has a time period $T$ when measured in a stationary elevator. If the elevator begins to accelerate upwards at a rate of $g/2$, what is the new time period of the pendulum?

$\sqrt{\frac{2}{3}}T$✔️
$\sqrt{3}T$
$\sqrt{\frac{3}{2}}T$
$\frac{T}{\sqrt{3}}$

Correct Answer Logic:

The effective gravity $g_{eff}$ in an upward accelerating lift is $g + a = g + g/2 = 3g/2$. Since the time period $T \propto \frac{1}{\sqrt{g}}$, the new period $T' = T \sqrt{\frac{g}{3g/2}} = T \sqrt{\frac{2}{3}}$.

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Administration QUESTION #9570

Question 3658

Reinforcement Theory (B.F. Skinner) is applied to organizational behaviour through the principle of behaviour modification. A government department introduces a system where officers receive formal recognition for timely completion of files. According to reinforcement theory, what should happen to overall file completion rates, and what is the precise mechanism?

Completion rates will increase because recognition satisfies the esteem need in Maslow's hierarchy, motivating officers
Completion rates will increase because positive reinforcement (recognition as stimulus consequence) strengthens the association between the behaviour (timely completion) and the desired response — making the behaviour more likely to recur✔️
Completion rates will remain unchanged because government employees are Theory X workers whose behaviour is unaffected by non-financial rewards
Completion rates may actually decrease due to the Hawthorne effect — when employees realize they are being monitored they may strategically delay files to make the recognition more meaningful

Correct Answer Logic:

Skinner's reinforcement theory holds that behaviour followed by positive consequences (reinforcement) is more likely to be repeated. Recognition functions as a positive reinforcer: when timely completion (stimulus → response) is consistently followed by recognition (consequence), the neural and behavioural association between the action and reward strengthens — making the behaviour more probable over time. This is the core mechanism of operant conditioning applied to organizational behaviour.

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