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Chemistry QUESTION #5553

According to Molecular Orbital Theory, which statement correctly describes $Li_2^+$ and $Li_2^-$?

$Li_2^+$ is unstable and $Li_2^-$ is stable
$Li_2^+$ is stable and $Li_2^-$ is unstable
Both are stable✔️
Both are unstable

Correct Answer Logic:

$Li_2^+$ bond order = $\frac{1}{2}(3-2) = 0.5 > 0$ → stable. $Li_2^-$ bond order = $\frac{1}{2}(4-3) = 0.5 > 0$ → stable. Both species have positive bond orders and can exist as stable (though weakly bonded) species.

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Paper-II (Pharmacology and Social Behaviour, Law & Ethics and Computer Sciences) QUESTION #5804

Question 2742

Communication through facial expressions and body posture is called:

Verbal
Kinesics✔️
Writing
Proxemics

Correct Answer Logic:

Kinesics is the study of body movement and facial expressions[cite: 7].

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Tourism & Hospitality Management QUESTION #1656

Question 2743

The Emerging Trends course covers 'the future of global aviation' including commercial jetliner history and forecasts. Which aspect of airline industry dynamics is specifically addressed in the curriculum?

The environmental impact of aviation on global warming only
Commercial jetliner history and forecast, companies and airlines, negotiation positions, and negotiation options in the context of fleet renewal and market competition✔️
The social media marketing strategies of major airlines
Pilot training requirements under ICAO standards

Correct Answer Logic:

Module 6 of the Emerging Trends course — 'Future of Global Aviation' — specifically covers: Commercial Jetliners history and forecast, Companies and Airlines competitive landscape, Negotiation positions, and Negotiation options — examining how airline manufacturers, lessors, and airlines negotiate fleet decisions and how these shape the future capacity and connectivity of global tourism.

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Planning QUESTION #5015

Question 2744

What does the Gini Coefficient measure in urban economics?

Population density
Income inequality✔️
Housing prices
Transportation costs

Correct Answer Logic:

The Gini Coefficient (0-1 scale) measures income/wealth inequality. 0 represents perfect equality; 1 represents maximum inequality. Values above 0.4 indicate high inequality. Calculated from the Lorenz curve: $G = \frac{A}{A+B}$ where A is area between Lorenz curve and equality line.

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Pakistan Affairs QUESTION #144

Question 2745

What is the range of the latest Shaheen-III missile?

3750 km
2750 km✔️
1750 km
2500 km

Correct Answer Logic:

Shaheen-III is a surface-to-surface medium-range ballistic missile with a maximum range of approximately 2,750 km.

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General Knowledge QUESTION #4826

Question 2746

The largest island in the Indian Ocean is which of the following?

Sri Lanka
Sumatra
Madagascar✔️
Borneo

Correct Answer Logic:

Madagascar is the largest island in the Indian Ocean, with an area of approximately 587,041 square kilometers. It is also the world's fourth-largest island overall.

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Planning QUESTION #4949

Question 2747

What is the main purpose of Participatory Rural Appraisal (PRA)?

To impose external solutions
To involve communities in planning decisions✔️
To conduct top-down surveys
To replace professional planners

Correct Answer Logic:

PRA involves local communities in identifying problems, analyzing situations, and planning solutions through participatory techniques, ensuring plans reflect genuine community needs and priorities.

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Islamic Studies QUESTION #7918

Question 2748

After the Hijrat to Medina, what was the first important action the Holy Prophet (SAW) took?

Built a Mosque for prayers✔️
Built his house
Created Bait-ul-mal
Raised an army

Correct Answer Logic:

After arriving in Medina, the Prophet (PBUH) first built Masjid-e-Nabawi (the Prophet's Mosque). This established a center for worship, community gathering, education, and governance. He also established brotherhood (Muakhaat) between Muhajirin and Ansar, created a written constitution (Sahifah al-Medina), and built houses adjacent to the mosque.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3501

Question 2749

Tannins are chemically defined as:

Nitrogenous bases
Complex organic, non-nitrogenous polyphenolic compounds✔️
Sugars
Fats

Correct Answer Logic:

Tannins are astringent substances that can precipitate proteins.

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Quantitative Reasoning QUESTION #8051

Question 2750

VERITABLE: Choose the word most nearly opposite in meaning to this word.

impetuous
pernicious
inefficacious
specious✔️

Correct Answer Logic:

VERITABLE means real, genuine, or authentic — truly what it is said to be. Its antonym is specious, which means appearing valid or genuine on the surface but actually false or misleading. 'Impetuous' means acting on impulse. 'Pernicious' means harmful. 'Inefficacious' means not producing the desired effect. Only 'specious' (false appearance of truth) directly opposes 'veritable' (genuine truth).

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Civil / Architecture QUESTION #2336

Question 2751

In reinforced concrete design using the Ultimate Strength Method, the nominal moment capacity $M_n$ of a singly reinforced rectangular beam where $a$ is the depth of the equivalent rectangular stress block is:

$M_n = A_s f_y \left(d - \dfrac{a}{3}\right)$
$M_n = A_s f_y \left(d - \dfrac{a}{2}\right)$✔️
$M_n = 0.85 f'_c \cdot b \cdot d^2$
$M_n = A_s f_y \cdot d$

Correct Answer Logic:

The nominal moment capacity is $M_n = A_s f_y \left(d - \dfrac{a}{2}\right)$, where the lever arm is taken from the centroid of tension steel to the centroid of the compression block at $a/2$ from the top fiber. The stress block depth $a = \dfrac{A_s f_y}{0.85 f'_c b}$ per ACI 318.

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Chemistry QUESTION #1449

Question 2752

Which of the following compounds are aromatic? [Structures A, B, C, D shown in the paper]

A, B and D✔️
A, C and D
A and D
None of these

Correct Answer Logic:

Aromaticity requires: (1) cyclic structure, (2) planar, (3) fully conjugated, and (4) obeys Hückel's rule ($4n+2$ $\pi$ electrons). From the structures shown: A (naphthalene-type, $10\pi$e$^-$) and B (azulene-type, $10\pi$e$^-$) are aromatic; C (cyclopentadiene with $\text{NH}_2$, i.e. pyrrole-like with lone pair — $6\pi$e$^-$) is aromatic; D (indene-like) — based on standard exam answer, A, B and D are aromatic → **(A)**.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3098

Question 2753

Which heart chamber pumps oxygenated blood to the entire body via the Aorta?

Right Atrium
Right Ventricle
Left Atrium
Left Ventricle✔️

Correct Answer Logic:

The Left Ventricle has the thickest muscular wall to generate high pressure for systemic circulation.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3268

Question 2754

'Antidiuretic Hormone' (ADH) is synthesized in the:

Posterior Pituitary
Anterior Pituitary
Hypothalamus✔️
Adrenal Gland

Correct Answer Logic:

It is produced in the hypothalamus but stored and released by the posterior pituitary.

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Egnlish QUESTION #665

Question 2755

"Objective Correlative" is a term coined by:

T.S. Eliot
Washington Allston✔️
Matthew Arnold
I. A. Richards

Correct Answer Logic:

While popularized by T.S. Eliot in his essay Hamlet and His Problems, the term was originally coined by the American painter and poet Washington Allston.

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Mathematics QUESTION #1313

Question 2756

For the IVP $y'=1+y/x$, $y(1)=2$, $h=0.25$, Euler's first step gives $y(1.25)\approx$:

$2.75$✔️
$3.00$
$2.50$
$3.25$

Correct Answer Logic:

$f(1,2)=1+\dfrac{2}{1}=3$. $y_1=y_0+h\cdot f(x_0,y_0)=2+0.25\times3=2+0.75=2.75$.

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Physics QUESTION #1169

Question 2757

A simple pendulum is set into oscillations. The bob of the pendulum comes to rest after some time due to:

Friction of air✔️
Its mass
Tension in the string
Gravity

Correct Answer Logic:

The pendulum bob comes to rest due to air resistance (friction of air), which is a dissipative (non-conservative) force. It continuously removes mechanical energy from the system, converting it to heat, causing the amplitude to decrease over time until the pendulum stops — this is damped oscillation.

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CISA QUESTION #6827

Question 2758

In evaluating an organization's business continuity plan, an auditor finds that Recovery Time Objective (RTO) is 4 hours but current recovery capabilities require 12 hours. What should be the auditor's PRIMARY recommendation?

Update the BCP document to reflect 12-hour RTO
Assess the gap between RTO requirement and actual capability then develop remediation plan✔️
Reduce RTO to 2 hours
Cancel the BCP

Correct Answer Logic:

When a gap exists between required and actual recovery capabilities, the organization faces unmitigated risk. The auditor should highlight this gap and recommend analysis of whether to: improve capabilities to meet the 4-hour RTO, accept the risk of longer recovery, or adjust business requirements. Simply updating documentation without addressing the gap provides no risk reduction.

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Chemistry QUESTION #4351

Question 2759

Conversion of dihaloalkane into alkyne does not involve:

Addition✔️
Elimination
Base
Heat

Correct Answer Logic:

Converting a dihaloalkane to an alkyne involves double dehydrohalogenation (two elimination steps) using a strong base and heat. Addition reactions are not involved in this conversion.

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Agronomy QUESTION #2045

Question 2760

The 'critical concentration' of a nutrient in plant tissue is defined as:

The concentration above which toxicity symptoms appear
The tissue concentration below which yield is reduced by 10% relative to maximum yield, used to diagnose deficiency and calibrate fertilizer recommendations✔️
The minimum concentration detectable by laboratory analysis
The concentration at which a nutrient first becomes visible in a spectroscopic analysis

Correct Answer Logic:

Critical concentration (or critical level) is the tissue nutrient concentration below which a 10% yield reduction occurs (some definitions use 5%). It is determined through nutrient response experiments and tissue analysis. It forms the basis for plant tissue testing diagnostic programs and fertilizer recommendations in modern agronomy.

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