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General Ability and Fire Fighting QUESTION #5607

What is property conservation in the context of firefighting?

Protecting neighboring buildings
Minimizing damage to the structure and contents after the fire is under control✔️
Saving personal belongings during evacuation
Documenting property damage

Correct Answer Logic:

Property Conservation is the third tactical priority — minimizing damage to the building and its contents once the fire is under control.

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Physics QUESTION #7078

Question 2

A pipe that is open at both ends has a fundamental frequency $f$ in the air. If the pipe is submerged vertically in water such that exactly half of its length is underwater, what is the new fundamental frequency of the air column?

$\frac{3f}{4}$
$2f$
$f$✔️
$\frac{f}{2}$

Correct Answer Logic:

An open pipe of length $L$ has $f = \frac{v}{2L}$. When half-submerged, it becomes a closed pipe of length $L/2$. The fundamental frequency of a closed pipe is $f' = \frac{v}{4(L_{new})} = \frac{v}{4(L/2)} = \frac{v}{2L}$. Therefore, $f' = f$.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3056

Question 3

The abbreviation 'h.s.' (hora somni) means:

During the day
At bedtime✔️
In the morning
Every second hour

Correct Answer Logic:

'h.s.' means at the hour of sleep (bedtime).

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Pharmacokinetics and Pharmacodynamics QUESTION #3848

Question 4

Dopamine hydrochloride is available as $6.4\ \text{mg}/100\ \text{mL}$. The prescribed infusion rate is $5\ \mu\text{g/kg/min}$ for a $64$ kg patient. What volume per minute should be infused?

$0.2$ mL/min
$0.5$ mL/min
$2.5$ mL/min
$5.0$ mL/min✔️

Correct Answer Logic:

Required dose $= 5\ \mu\text{g/kg/min} \times 64\ \text{kg} = 320\ \mu\text{g/min}$. Concentration $= 6.4\ \text{mg}/100\ \text{mL} = 64\ \mu\text{g/mL}$. Volume $= \dfrac{320}{64} = 5\ \text{mL/min}$.

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Business, Public administration and Policy QUESTION #10516

Question 5

Behaviorism as a school of thought is most closely associated with which discipline?

Economics
Politics
Psychology✔️
None of these

Correct Answer Logic:

Behaviorism is a school of thought in Psychology, associated with John B. Watson, B.F. Skinner, and Ivan Pavlov. It holds that behavior can be explained in terms of conditioning and stimulus-response mechanisms, rejecting the study of unobservable mental states. In public administration, behavioral insights have influenced nudge theory and evidence-based policy design.

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General Knowledge QUESTION #8913

Question 6

The most abundant element in the Earth's crust is:

Silicon
Iron
Aluminum
Oxygen✔️

Correct Answer Logic:

Oxygen is the most abundant element in the crust.

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Sociology QUESTION #1671

Question 7

Talcott Parsons' 'pattern variables' framework presents five pairs of opposed value-orientation choices that structure social action and role expectations. Which of the following pairings does NOT belong to Parsons' original set of pattern variables?

Universalism versus Particularism
Achievement versus Ascription
Rationalism versus Emotionalism✔️
Affectivity versus Affective Neutrality

Correct Answer Logic:

Parsons' five pattern variables are: (1) Universalism vs. Particularism, (2) Achievement vs. Ascription, (3) Affectivity vs. Affective Neutrality, (4) Specificity vs. Diffuseness, and (5) Self-orientation vs. Collectivity-orientation. 'Rationalism vs. Emotionalism' is NOT one of Parsons' pattern variables — making it the correct answer to this 'which does NOT belong' question.

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English QUESTION #7542

Question 8

Choose the correct meaning of the word pair "Peace and Piece"

Peace = a part; Piece = calmness.
Peace = calmness; Piece = a part.✔️
Peace = war; Piece = unity.
Both mean the same.

Correct Answer Logic:

Peace means calmness/freedom from disturbance

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MBBS QUESTION #10191

Question 9

Transposition of the great arteries results from an abnormality in which developmental process during heart formation?

Straight (non-spiral) partitioning of the truncus arteriosus by the aorticopulmonary septum✔️
Failure of closure of the interventricular septum
Failure of fusion of the endocardial cushions
Abnormal development of the sinus venosus

Correct Answer Logic:

Normally the aorticopulmonary septum spirals as it divides the truncus arteriosus, positioning the aorta and pulmonary trunk in their crossing relationship. When this septum forms straight rather than spirally, the aorta arises from the right ventricle and the pulmonary trunk from the left — transposition of the great arteries.

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Security Measures to Maintain Law and Order QUESTION #909

Question 10

Under Section 7-A, which law governs the "Discipline" of ASF officers to ensure they maintain order effectively?

Police Act 1861
Pakistan Army Act 1952✔️
ASF Act 1975 only
Civil Servants Act

Correct Answer Logic:

The 2012 amendment applied the Pakistan Army Act 1952 to ASF personnel for discipline and service offenses.

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Physics QUESTION #7305

Question 11

A car travels from X to Y with uniform speed $v_u$ and returns with uniform speed $v_d$. The average speed for the entire round trip is:

$\dfrac{v_u + v_d}{2}$
$\sqrt{v_u v_d}$
$\dfrac{2v_u v_d}{v_u + v_d}$✔️
$\dfrac{v_u v_d}{v_u + v_d}$

Correct Answer Logic:

Let distance X to Y $= d$. Total distance $= 2d$.

Total time $= \dfrac{d}{v_u} + \dfrac{d}{v_d} = d\cdot\dfrac{v_u + v_d}{v_u v_d}$

Average speed $= \dfrac{2d}{d\cdot\dfrac{v_u+v_d}{v_u v_d}} = \mathbf{\dfrac{2v_u v_d}{v_u + v_d}}$ (harmonic mean)

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Maths QUESTION #2870

Question 12

A student scored $450$ marks out of $500$. What is the percentage?

80%
85%
90%✔️
95%

Correct Answer Logic:

Percentage $= \frac{\text{Obtained}}{\text{Total}} \times 100 = \frac{450}{500} \times 100 = 90\%$.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3283

Question 13

'Saprophytic' microorganisms obtain their nutrition from:

Living hosts
Dead and decaying organic matter✔️
Photosynthesis
Inorganic minerals

Correct Answer Logic:

Saprotrophs play a vital role in ecosystem recycling by breaking down dead matter.

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Pakistan Affairs QUESTION #595

Question 14

Quaid-i-Azam M. A. Jinnah breathed his last in:

Quetta
Lahore
Karachi✔️
None of These

Correct Answer Logic:

The Quaid passed away in Karachi on September 11, 1948.

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Chemistry QUESTION #7201

Question 15

Select the correct list of all naturally occurring isotopes of hydrogen.

Tritium and Protium only
Protium and Deuterium only
Protium, Deuterium, and Tritium✔️
Deuterium and Tritium only

Correct Answer Logic:

Hydrogen has three main isotopes:
Protium ($^1H$): The most common, with no neutrons.
Deuterium ($^2H$): Also known as heavy hydrogen, with one neutron.
Tritium ($^3H$): A radioactive isotope with two neutrons.

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Aptitude QUESTION #10982

Question 16

The term 'cantilever' in structural engineering refers to:

A beam supported at both ends
A horizontal structural element fixed at one end and free at the other✔️
A diagonal brace in a frame
A type of arch with a keystone

Correct Answer Logic:

A cantilever is a beam or structural element that:

Is fixed (anchored) at one end only
The other end projects freely without support
Carries load primarily through bending (hogging moment at the fixed end)

Famous cantilever examples in architecture:

Fallingwater (Frank Lloyd Wright) — dramatic cantilevered terraces over a waterfall
CN Tower observation deck
Balconies, overhanging roof eaves, diving boards

The tension face of a cantilever is at the TOP (opposite to a simply-supported beam where tension is at the bottom).

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Math (Module-1) QUESTION #5478

Question 17

In the given system of equations, a parabola $y = ax^2 + bx + c$ intersects a line. If they intersect at exactly one point $(x, y)$, what is the value of $x$?

-8
-6✔️
6
8

Correct Answer Logic:

Based on the original SAT test key, the intersection point occurs at $x = -6$.

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Social Studies QUESTION #10030

Question 18

Which of the following was NOT among the Millennium Development Goals?

Develop a global partnership for development
Environmental sustainability
Ensure equal political participation of women✔️
None of these

Correct Answer Logic:

The MDGs included gender equality/women's empowerment broadly, but not a specific goal on equal political participation of women.

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Reading and Writing (Module-1) QUESTION #5438

Question 19

Many of Shakespeare's tragedies appeal to today's audiences.?Romeo and Juliet?tackles universal themes. But understanding his history plays requires knowledge of English history. Consequently, ____

many theatergoers today find history plays less engaging than tragedies.✔️
some tragedies are more relevant than 20th-century plays.
Romeo and Juliet?is the most thematically accessible tragedy.
experts in English history prefer history plays to other works.

Correct Answer Logic:

The contrast implies history plays are less accessible/engaging for modern audiences.

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Bio-Technology QUESTION #10570

Question 20

Pulsed-field gel electrophoresis (PFGE) is specifically designed to separate:

Proteins by isoelectric point
Very large DNA fragments (30–2000 kbp) that co-migrate in standard gels✔️
RNA transcripts by size under denaturing conditions
Small oligonucleotides (<100 bp) with single-base resolution

Correct Answer Logic:

PFGE separates very large DNA molecules (30–2000 kbp) that cannot be resolved in conventional agarose gels (where all large molecules migrate at the same rate). An alternating/oscillating electric field causes DNA molecules to reorient — larger molecules reorient more slowly, achieving size-based separation. PFGE is used for physical mapping of bacterial chromosomes and epidemiological strain typing.

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