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Maths QUESTION #4502

Question 11181

What is the reciprocal of $\frac{3}{7}$?

$\frac{7}{3}$✔️
$\frac{-3}{7}$
$3.7$
$\frac{3}{7}$

Correct Answer Logic:

The reciprocal of $\frac{a}{b}$ is $\frac{b}{a}$. So reciprocal of $\frac{3}{7}$ is $\frac{7}{3}$

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Tourism & Hospitality Management QUESTION #1636

Question 11182

The Heritage Management course covers 'information technology in heritage management.' Which specific technologies are identified as applicable to documentation, conservation, and management of cultural heritage?

Social media platforms and mobile apps for tourist engagement
Database Management Systems (DBMS) and Geographic Information Systems (GIS) for documentation, spatial analysis, and conservation management of heritage sites✔️
Point of sale (POS) systems for heritage site gift shops
Video conferencing tools for museum staff meetings

Correct Answer Logic:

Module 9 of the Heritage Management course — Information Technology in Heritage Management — specifically identifies Database Management Systems (DBMS) and Geographic Information Systems (GIS) as the key technologies for heritage documentation, spatial mapping, conservation planning, and management. GIS in particular enables spatial analysis of heritage site condition, visitor patterns, and environmental threats.

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Physics QUESTION #7324

Question 11183

A particle is projected vertically upward with $u = 10\text{ m/s}$. Air exerts a resistive force $F = -0.2v^2$ on it ($m = 2\text{ kg}$, $g = 10\text{ m/s}^2$). The maximum height attained is:

$5\ln 2$✔️
$3\ln 2$
$2\ln 2$
$10\ln 2$

Correct Answer Logic:

Net force (taking up as positive): $F_{net} = -mg - 0.2v^2 = -20 - 0.2v^2$

Using $ma = v\dfrac{dv}{dx}$: $2v\dfrac{dv}{dx} = -20 - 0.2v^2$

Separating variables: $\dfrac{v\,dv}{20+0.2v^2} = -\dfrac{dx}{2}$

Integrating from $v = 10$ to $v = 0$: let $k = 20 + 0.2v^2$, $dk = 0.4v\,dv$

$\dfrac{1}{0.4}\big[\ln(20) - \ln(40)\big] = -\dfrac{H}{2} \Rightarrow H = \dfrac{2\ln 2}{0.4} = \mathbf{5\ln 2}$

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General Knowledge QUESTION #11529

Question 11184

Which description accurately defines hackers?

People with identical motivations
Individuals who gain unauthorised access into other computer systems✔️
People who break into computers legally without causing damage
People allergic to computing systems

Correct Answer Logic:

Hackers are individuals who gain unauthorised access to computer systems or networks. 'White hat' (ethical) hackers test security with permission; 'black hat' hackers have malicious intent; 'grey hat' hackers may break in without permission but disclose vulnerabilities. The term originally described skilled creative programmers.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3011

Question 11185

The purpose of a 'Suspending Agent' is to:

Increase the rate of settling
Increase the viscosity of the vehicle✔️
Lower the boiling point
Sterilize the preparation

Correct Answer Logic:

Suspending agents increase viscosity to slow down the sedimentation of solid particles.

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Physics QUESTION #7008

Question 11186

Two magnetic materials A and B have different hysteresis loops. Material A has a wide, large-area loop and material B has a narrow, small-area loop. For use in electric generators, transformer cores, and electromagnet cores, the correct assignment is:

A for electromagnets and B for electric generators
A for transformers and B for electric generators
B for electromagnets and transformers✔️
A for electric generators and transformers

Correct Answer Logic:

Key properties:

Wide hysteresis loop (A): High retentivity and high coercivity — hard magnetic material. Good for permanent magnets (used in electric generators).
Narrow hysteresis loop (B): Low retentivity, low coercivity, low energy loss per cycle — soft magnetic material. Ideal for transformers and electromagnets (needs to magnetise/demagnetise repeatedly with low loss).

Electric generators use permanent magnets (wide loop, material A). Transformers and electromagnets use soft material (B). So Option C is correct.

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Medicinal Chemistry and Biopharmaceutics QUESTION #3828

Question 11187

Within what temperature range should total parenteral nutrition (TPN) solutions be stored to maintain stability and prevent microbial growth?

$1^\circ\text{C}$ and $4^\circ\text{C}$
$2^\circ\text{C}$ and $8^\circ\text{C}$✔️
$15^\circ\text{C}$ and $20^\circ\text{C}$
$25^\circ\text{C}$ and $35^\circ\text{C}$

Correct Answer Logic:

TPN solutions should be stored refrigerated between $2^\circ\text{C}$ and $8^\circ\text{C}$ according to guidelines, but practically $1^\circ\text{C}$–$4^\circ\text{C}$ is the accepted optimal refrigeration range for these preparations.

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General Knowledge QUESTION #8760

Question 11188

The 49th Parallel is a boundary line between which two countries?

North and South Korea
China and Mongolia
Germany and Poland
USA and Canada✔️

Correct Answer Logic:

The 49th parallel forms part of the US-Canada border.

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MBBS QUESTION #10242

Question 11189

Left ventricular myocardium receives the majority of its coronary blood flow during which phase of the cardiac cycle, and why does tachycardia worsen myocardial ischemia in coronary artery disease?

Predominantly during diastole, because systolic compression of intramural vessels by contracting myocardium impedes flow; tachycardia disproportionately shortens diastole, reducing perfusion time✔️
Predominantly during systole, when ventricular pressure is highest
Equally throughout the cardiac cycle regardless of heart rate
Only during isovolumetric relaxation, independent of heart rate

Correct Answer Logic:

Unlike other organs, the left ventricle perfuses mainly during diastole because systolic myocardial contraction compresses intramural coronary vessels. As heart rate rises, diastole shortens proportionally more than systole, reducing the time available for coronary perfusion — explaining why tachycardia can precipitate ischemia in patients with coronary stenosis.

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General Knowledge QUESTION #4749

Question 11190

Transparency International's global headquarters is located in which city?

New York
London
Berlin✔️
Geneva

Correct Answer Logic:

Transparency International (TI), the global anti-corruption NGO founded in 1993, has its secretariat headquarters in Berlin, Germany.

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Chemistry QUESTION #7191

Question 11191

The reaction of elemental sulfur ($S_{8}$) in an alkaline medium is represented by the equation: $S_{8(s)} + aOH_{(aq)}^{-} \rightarrow bS_{(aq)}^{2-} + cS_{2}O_{3(aq)}^{2-} + dH_{2}O_{(l)}$. Determine the stoichiometric coefficient 'a' required to balance this equation.

12✔️
6
8
10

Correct Answer Logic:

This is a disproportionation reaction. The balanced equation in alkaline medium is:

$S_{8} + 12OH^{-} \rightarrow 4S^{2-} + 2S_{2}O_{3}^{2-} + 6H_{2}O$

Therefore, the value of the coefficient 'a' is $12$.

[cite: 13]

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Chemistry QUESTION #7397

Question 11192

Which one of the following orders is NOT in accordance with the stated property?

$\text{F}_2 > \text{Cl}_2 > \text{Br}_2 > \text{I}_2$: bond dissociation energy✔️
$\text{F}_2 > \text{Cl}_2 > \text{Br}_2 > \text{I}_2$: oxidising power
$\text{HI} > \text{HBr} > \text{HCl} > \text{HF}$: acidic property in water
$\text{F} > \text{Cl} > \text{Br} > \text{I}$: electronegativity

Correct Answer Logic:

Bond dissociation energies of halogens:
$\text{Cl}_2 > \text{Br}_2 > \text{F}_2 > \text{I}_2$

F₂ has an anomalously low bond energy (158 kJ/mol) due to lone pair repulsion in the small F atom, making $\text{Cl}_2$ stronger. So the order $\text{F}_2 > \text{Cl}_2$ for bond dissociation energy is incorrect.

All other options are correct: oxidising power, acid strength of HX in water, and electronegativity all follow the stated orders.

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Islamic Studies QUESTION #8237

Question 11193

What is the title of Hazrat Ibrahim (A.S.)?

Khalil Ullah✔️
Kalim Ullah
Saif Ullah
Jad-ul-Ambia

Correct Answer Logic:

Hazrat Ibrahim (Abraham) AS is called 'Khalilullah' (Friend of Allah). This special title was given because of his complete submission to Allah's will and his willingness to sacrifice everything for Allah, including his son. He is also called 'Abu al-Anbiya' (Father of Prophets) as many prophets descended from his lineage. His life was filled with trials including being thrown into fire, migration, and the command to sacrifice his son—all of which he faced with unwavering faith.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3086

Question 11194

The process of blood cell formation (Haematopoiesis) occurs in the:

Yellow bone marrow
Red bone marrow✔️
Periosteum
Articular cartilage

Correct Answer Logic:

Red bone marrow, found in spongy bone, is the site of red and white blood cell production.

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Quantitative Reasoning QUESTION #8008

Question 11195

The actual ------- of Wilson's position was always ------- by his refusal to compromise after having initially agreed to negotiate a settlement.

outcome...foreshadowed
logic...enhanced
rigidity...betrayed✔️
uncertainty...alleviated

Correct Answer Logic:

Wilson first agreed to negotiate but then refused to compromise—this reveals something contradictory about his position. Rigidity...betrayed is correct: his actual rigidity (inflexibility) was betrayed (revealed/exposed) by refusing to compromise after initially seeming open to negotiation.

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The Constitution of Pakistan QUESTION #9359

Question 11196

Under Article 209, the Supreme Judicial Council's function regarding judges includes which of the following that is NOT within its powers?

Inquiring into incapacity of a judge
Presenting a report to the President for removal of a judge
Directly removing a judge from office✔️
Giving a judge an opportunity to show cause before presentation of adverse findings

Correct Answer Logic:

Article 209 establishes the Supreme Judicial Council to inquire into incapacity or misconduct of judges. However, the Council does not itself remove judges — it reports to the President, who then acts on the report. Direct removal power lies with the President on the Council's recommendation, not with the Council itself.

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Psychology QUESTION #11350

Question 11197

In any experiment, no inference can be drawn without two groups:

a control and inferential
an experimental and a control✔️
an experimental and a theoretical
none of these

Correct Answer Logic:

An experimental and a control group are necessary to draw inferences in an experiment.

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Mathematics QUESTION #4166

Question 11198

Using Trapezoidal rule with 5 points (4 subintervals) for $\int_1^3 \frac{1}{x^2} dx$, what is $h$?

$0.25$
$0.5$✔️
$0.75$
$1$

Correct Answer Logic:

5 points means 4 subintervals. $h = \frac{3-1}{4} = \frac{2}{4} = 0.5$.

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Bio-Technology QUESTION #10609

Question 11199

Inclusion bodies formed during recombinant protein overexpression in E. coli are:

Membrane-bound vesicles containing properly folded protein
Dense intracellular aggregates of misfolded or partially unfolded recombinant protein✔️
Plasmid DNA aggregates that form when copy number is too high
Peroxisomes containing oxidised protein

Correct Answer Logic:

Inclusion bodies form in E. coli when recombinant protein accumulates faster than the cellular chaperone machinery can fold it. The misfolded protein aggregates into dense, insoluble intracellular particles. Recovery requires: cell disruption → centrifugal isolation of inclusion bodies → solubilisation with chaotropic agents (6–8 M urea or guanidinium chloride) → controlled refolding by dilution or dialysis into native buffer. Despite the extra steps, inclusion bodies offer high-purity protein and protection from proteolysis.

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Law QUESTION #9709

Question 11200

Under Article 2(7), when the Court 'may presume' a fact, it means the Court:

Must regard the fact as proved
May either regard the fact as proved unless disproved, OR may call for proof of it✔️
Shall definitely presume the fact
Cannot call for proof of it

Correct Answer Logic:

Article 2(7) states that whenever the Court may presume a fact, it may either regard such fact as proved, unless and until it is disproved, OR may call for proof of it — giving the Court discretion.

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