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Boilers Mechanical Engineering QUESTION #4076

Question 10261

'Total Alkalinity' in boiler water is a measure of:

The price of water
The concentration of carbonate, bicarbonate, and hydroxide ions✔️
The weight of the water
The amount of oxygen

Correct Answer Logic:

Proper alkalinity is needed to prevent scale and corrosion.

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Ability / HR / Governance / Special Education QUESTION #5640

Question 10262

During the first quarter of the financial year a PAO wishes to release funds for a PSDP scheme that has already been formally approved by ECNEC. Under the cash management rules which approval is NOT required for this first-quarter release?

Prior approval of the Financial Adviser's Organization
Secretary of the Ministry/Division's approval of the Cash Plan
Planning and Development Division's concurrence with the Cash Plan
AFS(E) approval for each individual release✔️

Correct Answer Logic:

During the first quarter of the financial year releases for PSDP schemes already formally approved or given anticipatory approval by Chairman ECNEC shall be made by the Secretary/PAO without approval of FA's Organization in accordance with the Cash Plan duly approved by the Secretary and Planning and Development Division.

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ETAG Aerospace Engineering (AE) QUESTION #3774

Question 10263 (Select all that apply)

Which of the following properties are characteristic of a real $n \times n$ matrix $A$?

If $A$ is symmetric, its eigenvalues are real.✔️
If $A$ is orthogonal, its determinant is $\pm 1$.✔️
If $A$ is skew-symmetric, its diagonal elements are zero.✔️
If $A$ is singular, its determinant is zero.✔️

Correct Answer Logic:

All listed options are standard properties of these specific matrix types.

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General Ability and Fire Fighting QUESTION #5592

Question 10264

Which of the following is an example of the 'Starving' method of fire extinguishment?

Applying CO2 gas to the fire
Turning off a gas valve✔️
Using a fire blanket
Spraying water on flames

Correct Answer Logic:

Starving a fire means removing the fuel source. Turning off a gas valve removes the fuel supply and therefore extinguishes the fire.

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Electrical Engineering QUESTION #2189

Question 10265

A p-channel JFET has $I_{DSS} = -8\,\text{mA}$ and pinch-off voltage $V_P = +3\,\text{V}$. At $V_{GS} = 1.5\,\text{V}$ (saturation region), the drain current $I_D$ is:

$-2\,\text{mA}$✔️
$-4\,\text{mA}$
$-6\,\text{mA}$
$+2\,\text{mA}$

Correct Answer Logic:

$I_D = I_{DSS}\!\left(1-\frac{V_{GS}}{V_P}\right)^2 = -8\!\left(1-\frac{1.5}{3}\right)^2 = -8\times(0.5)^2 = -8\times0.25 = -2\,\text{mA}$. Negative sign confirms conventional current flows from source to drain in p-channel device.

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English QUESTION #2776

Question 10266

Which ONE WORD means: 'The study of ancient cultures by digging up remains'?

Geology
Astrology
Archaeology✔️
Anthropology

Correct Answer Logic:

'Archaeology' is the study of human history and prehistoric cultures through excavation and analysis of artifacts and remains. Geology studies Earth's physical structure; Astrology studies celestial bodies' supposed influence on humans; Anthropology studies human societies.

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Security Measures to Maintain Law and Order QUESTION #897

Question 10267

"Landside Security" measures primarily focus on maintaining order in:

The Runway
The Cockpit
Public areas & Car parks✔️
The Cargo hold

Correct Answer Logic:

Landside refers to areas open to the public; maintaining order here is key to preventing attacks before the security checkpoint.

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Paper-II (Pharmacology and Social Behaviour, Law & Ethics and Computer Sciences) QUESTION #5750

Question 10268

According to Young's Formula, what is the dose for a 6-year-old child if the standard adult dose is $600$ mg?

100 mg
300 mg
200 mg✔️
150 mg

Correct Answer Logic:

Using Young's Formula: $\text{Child's Dose} = \frac{6 \times 600}{6 + 12} = 200$ mg.

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Home Economics QUESTION #6279

Question 10269

In clothing construction, a 'Dart' is primarily used to:

Increase the total width of the garment
Provide shape and contour to a flat piece of fabric✔️
Decorate the hemline
Reinforce the buttonholes

Correct Answer Logic:

Darts are folds sewn into fabric to allow the garment to fit the curves of the human body.

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Pakistan Affairs QUESTION #9069

Question 10270

Which country is located to the north of Pakistan?

Afghanistan
India
China✔️
Iran

Correct Answer Logic:

China is north of Pakistan (via Khunjerab).

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The Constitution of Pakistan QUESTION #9355

Question 10271

Under Article 239(5), as substituted by the 27th Amendment 2025, courts now have what jurisdiction over constitutional amendments?

Plenary power to review on all grounds
Can review only if fundamental rights are violated
No court shall have jurisdiction to call in question any amendment to the Constitution on any ground whatsoever✔️
Can review if the amendment violates the basic structure doctrine

Correct Answer Logic:

Article 239(5) as substituted by the 27th Amendment 2025 completely ousts all judicial jurisdiction: 'no court shall have jurisdiction to call in question any amendment to the Constitution on any ground whatsoever.' Article 239(6) further declares there is 'no limitation whatever' on Parliament's amending power.

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Math Physics Chemistry Biology QUESTION #806

Question 10272

Which gives $+3$ charge?

Al✔️
Ca
Na
None

Correct Answer Logic:

Aluminium (Al) is in Group III and loses 3 electrons to form $\text{Al}^{3+}$ ion with a $+3$ charge.

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General Knowledge QUESTION #8677

Question 10273

What was the first living creature to travel into space?

A dog (bitch)✔️
A frog
An eagle
A cow

Correct Answer Logic:

Laika, a dog, was the first living creature in space.

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Nursing QUESTION #9182

Question 10274

In community health assessment, the windshield survey is best described as:

A survey conducted in air-conditioned offices using secondary data
A systematic, observational community assessment conducted while driving or walking through the community✔️
A questionnaire-based household survey
An environmental impact assessment for industrial areas

Correct Answer Logic:

A Windshield Survey is a community assessment technique where the nurse drives or walks through the community to systematically observe its characteristics. Data collected includes:

Housing conditions and neighbourhood boundaries
Availability of health, educational, and commercial services
Environmental hazards (open drains, garbage, pollution)
Community dynamics (people on streets, parks, gathering places)
Transportation and accessibility
Visible health issues (malnutrition, injuries, alcohol/drug use)

The windshield survey is often the first step in a community health needs assessment — essential for community nursing in Pakistan's rural and urban settings.

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MBBS QUESTION #10291

Question 10275

A patient with Cushing's syndrome due to chronic glucocorticoid excess develops which characteristic metabolic and body composition changes?

Hypoglycemia with generalized weight loss
Hyperglycemia, central (truncal) obesity with peripheral muscle wasting, reflecting cortisol's catabolic effect on peripheral tissue combined with lipogenic effects centrally✔️
Hyperkalemia with hyponatremia
Isolated hypotension with no metabolic change

Correct Answer Logic:

Excess cortisol promotes peripheral protein catabolism (muscle wasting, thin skin, striae) while paradoxically favoring central fat deposition, and antagonizes insulin action to raise blood glucose — together producing the characteristic central obesity with wasted limbs and hyperglycemia of Cushing's syndrome.

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Boilers Mechanical Engineering QUESTION #4072

Question 10276

'Purging' the furnace before ignition is done to:

Clean the dust
Remove any unburnt fuel/gases to prevent an explosion (mishap)✔️
Heat the furnace
Cool the burner

Correct Answer Logic:

A high-volume air purge is the first step in any safe burner start-up sequence.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #2964

Question 10277

Which of the following is a 'Water-in-Oil' (W/O) emulsifying agent?

Sodium Lauryl Sulfate
Wool Fat✔️
Acacia
Tragacanth

Correct Answer Logic:

Wool fat (Lanolin) is a common W/O emulsifying agent, whereas Acacia is an O/W agent.

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Boilers Mechanical Engineering QUESTION #2491

Question 10278

A mechanism is defined in mechanism theory as:

Any collection of rigid bodies
A kinematic chain in which at least one link has been grounded (fixed to the frame)✔️
A chain with exactly one degree of freedom
A system with more links than kinematic pairs

Correct Answer Logic:

By Reuleaux's definition, a mechanism is a kinematic chain where at least one link is grounded (fixed) to the frame.

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Administration QUESTION #9540

Question 10279

Max Weber distinguished three ideal types of authority. A newly appointed district officer who commands obedience solely because citizens respect the office of DCO, rather than the individual's personal qualities or ancestral lineage, is exercising which type?

Traditional authority derived from historical precedent
Charismatic authority arising from personal magnetism
Rational-legal authority vested in the position itself✔️
Expert authority derived from technical competence

Correct Answer Logic:

Weber's rational-legal authority is attached to the position (office), not the person. Citizens comply because law and formal structure mandate it. This is distinguished from traditional authority (inherited) and charismatic authority (personal traits).

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Physics QUESTION #7329

Question 10280

Two projectiles of the same mass and speed are thrown at $60°$ and $30°$ with the horizontal. Which quantity is the same for both?

Time of flight
Range of projectile✔️
Maximum height
All of them

Correct Answer Logic:

For complementary angles ($60°$ and $30°$, since $60°+30°=90°$) with the same initial speed:

Range $R = \dfrac{u^2\sin2\theta}{g}$: $\sin(120°) = \sin(60°)$ ✓ — same range.

Time of flight $\propto \sin\theta$ — different. Max height $\propto \sin^2\theta$ — different.

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