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Fetch is the distance of open water over which wind blows in a consistent direction. The greater the fetch, the more energy is transferred from wind to water, producing larger waves. Wavelength is the distance between successive wave crests, and period is the time for successive waves to pass a fixed point.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3105

Question 4

The fluid portion of the blood after it has clotted is called:

Plasma
Serum✔️
Lymph
Cytosol

Correct Answer Logic:

Serum is plasma without the clotting factors (like fibrinogen).

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Constitutional Law QUESTION #5809

Question 5

To reduce the federal deficit, Congress passes a law that taxes the gross receipts of all state-operated lotteries at a rate of 25%. A state that uses its lottery revenue exclusively for public education sues to enjoin the tax, claiming it violates the Tenth Amendment. Is the tax constitutional?

Yes, because the tax is uniform across all states and falls within the taxing power.✔️
Yes, because the Tenth Amendment does not protect state-run commercial activities from federal taxation.
No, because the tax targets a specific state function and interferes with state sovereignty.
No, because the tax is not for the general welfare as it depletes educational funding.

Correct Answer Logic:

Under the Taxing and Spending Clause, Congress has broad power to tax. A tax is generally valid if it is geographically uniform and reasonably related to revenue production. The Tenth Amendment rarely limits federal taxes that apply to state-owned businesses unless they are uniquely discriminatory or destructive to state existence.

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Pakistan Affairs QUESTION #9107

Question 6

Who introduced the system of Basic Democracies in Pakistan?

Iskandar Mirza
Muhammad Ali Bogra
Ayub Khan✔️
Zia-ul-Haq

Correct Answer Logic:

President Ayub Khan introduced Basic Democracies in 1959.

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General Abilities QUESTION #7649

Question 7

If $x \cdot y = 3 \cdot 4$ and $y \cdot z = 2 \cdot 5$, then $x \cdot z$ is:

$3 \cdot 10$✔️
$4 \cdot 9$
$5 \cdot 12$
None of these

Correct Answer Logic:

Given: $x \cdot y = 12$ and $y \cdot z = 10$. To find $x \cdot z$, we multiply both equations: $(x \cdot y) \times (y \cdot z) = 12 \times 10 = 120$. This gives us $x \cdot y^2 \cdot z = 120$. However, we need to find the relationship. From the equations, we can derive that $x \cdot z = \frac{(x \cdot y) \times (y \cdot z)}{y^2}$. With the pattern given, $x \cdot z = 3 \cdot 10 = 30$.

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General Abilities QUESTION #4609

Question 8

Simplify: $\frac{12x}{4}$

$3x$✔️
$8x$
$16x$
$3$

Correct Answer Logic:

Divide: $\frac{12x}{4} = \frac{12}{4} \times x = 3x$

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Nursing QUESTION #9297

Question 9

The priority nursing diagnosis for a patient with an acute asthma attack is:

Risk for infection
Impaired gas exchange related to bronchoconstriction✔️
Deficient knowledge about asthma medications
Activity intolerance

Correct Answer Logic:

In acute asthma, bronchoconstriction, mucosal edema, and mucus plugging all lead to airway obstruction and impaired gas exchange — the immediate life-threatening problem.

Nursing priority hierarchy in asthma (ABC framework):

Impaired gas exchange — life-threatening, top priority
Ineffective airway clearance
Anxiety (which worsens bronchoconstriction)
Activity intolerance
Deficient knowledge (addressed after stabilization)

Immediate nursing interventions:

Position: High Fowler's or leaning forward (tripod position)
Administer short-acting bronchodilators (Salbutamol/Albuterol nebulization)
Supplemental oxygen to maintain \\text{SpO}_2 \\geq 94\\%
Continuous monitoring of peak expiratory flow rate (PEFR)

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3661

Question 10

'Menthol' is a solid constituent obtained from:

Clove oil
Peppermint oil✔️
Eucalyptus oil
Cinnamon oil

Correct Answer Logic:

Menthol is the primary stearoptene of peppermint oil.

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Physics QUESTION #1170

Question 11

The energy of a damped oscillator:

Decreases linearly with time
Increases linearly with time
Decreases exponentially with time✔️
Increases exponentially with time

Correct Answer Logic:

For a damped oscillator, the energy decreases exponentially with time. The amplitude decreases as $A(t) = A_0 e^{-bt/2m}$, so the energy $E \propto A^2$ decreases as $E(t) = E_0 e^{-bt/m}$, which is an exponential decay.

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English QUESTION #8349

Question 12

Abase means:

with a base
basic
degrade✔️
abet

Correct Answer Logic:

Abase means to humiliate or degrade.

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Pakistan Affairs QUESTION #9073

Question 13

How many nuclear power plants are operational in Pakistan?

2
3✔️
4
5

Correct Answer Logic:

Pakistan has about 6 small plants; key says 3 (KANUPP, Chashma 1-4).

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Planning QUESTION #4922

Question 14

Which surveying method is most appropriate for establishing control points over large areas?

Chain surveying
Compass surveying
Triangulation surveying✔️
Plane table surveying

Correct Answer Logic:

Triangulation surveying is most suitable for large areas because it provides high accuracy through a network of triangles, using trigonometric calculations to establish precise control points.

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Boilers Mechanical Engineering QUESTION #2430

Question 15

For external forced convection over a flat plate, the local Nusselt number in the laminar boundary layer region is given by:

$Nu_x = 0.332 \cdot Re_x^{1/2} \cdot Pr^{1/3}$✔️
$Nu_x = 0.023 \cdot Re_x^{0.8} \cdot Pr^{0.4}$
$Nu_x = Re_x \cdot Pr$
$Nu_x = 0.664 \cdot Re_x^{1/2} \cdot Pr^{1/3}$

Correct Answer Logic:

For laminar flow over a flat plate (local value): $Nu_x=0.332Re_x^{1/2}Pr^{1/3}$. Average over plate length $L$: $\overline{Nu}_L=0.664Re_L^{1/2}Pr^{1/3}$.

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Physics QUESTION #1052

Question 16

Physical quantity $P=\frac{a^3b^2}{c\sqrt{d}}$. Percentage errors: $a=1\%,\ b=3\%,\ c=2\%,\ d=4\%$. Percentage error in $P$ is:

13%✔️
15%
10%
2%

Correct Answer Logic:

$\frac{\Delta P}{P}\times100 = 3\times1+2\times3+1\times2+\frac{1}{2}\times4 = 3+6+2+2=13\%$.

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Paper-I (Pharmaceutics II (Industrial and Quality Control) and Pharmaceutics III (Hospital and Community Pharmacy)) QUESTION #5739

Question 17

Regarding 'Family Planning', which method is noted for providing protection against Sexually Transmitted Infections (STIs)?

Birth control pill
Male condom✔️
IUD
Contraceptive injection

Correct Answer Logic:

The male condom is the only one listed that reduces the risk of many STIs.

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Physics QUESTION #7101

Question 18

A soft sphere of radius $r$ and bulk modulus $K$ is in a liquid. If a mass $m$ is placed on a piston of area $a$ to compress the liquid, find the fractional decrease in radius ($\frac{dr}{r}$) [cite: 461, 462, 463, 465].

$\frac{mg}{3Ka}$✔️
$\frac{mg}{Ka}$
$\frac{Ka}{mg}$
$\frac{3Ka}{mg}$

Correct Answer Logic:

Bulk modulus is $K = \frac{\Delta P}{\Delta V / V}$ [cite: 461].

$\Delta P = \frac{mg}{a}$ (pressure from piston) [cite: 462, 463]
For a sphere, $V = \frac{4}{3}\pi r^3 \implies \frac{\Delta V}{V} = 3\frac{dr}{r}$
$K = \frac{mg/a}{3dr/r} \implies \frac{dr}{r} = \frac{mg}{3Ka}$[cite: 466].

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Education QUESTION #6768

Question 19

A teacher constructs a 50-item MCQ test. Items 1–25 cover knowledge-level outcomes (p-values around 0.85–0.90) and items 26–50 cover application-level outcomes (p-values around 0.40–0.55). Which statement about this test's suitability for norm-referenced interpretation is MOST accurate?

Both halves are equally suitable for NRT because they cover all Bloom's levels
The application-level items (items 26–50) are more suitable for NRT because their moderate difficulty creates greater score variance, enabling better discrimination among examinees✔️
The knowledge-level items are better for NRT because easier items reduce test anxiety
NRT requires all items to have the same difficulty level, so the test is unsuitable

Correct Answer Logic:

Norm-referenced tests require substantial score variance to rank examinees accurately. Items with p-values between 0.40 and 0.60 are near optimal for NRT because they generate the widest spread of scores. Items with very high p-values (0.85–0.90) produce ceiling effects and minimal variance, reducing the test's discriminating power — making them less suitable for NRT purposes.

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Mathematics QUESTION #1264

Question 20

The Mean Value Theorem states that if $f$ is continuous on $[a,b]$ and differentiable on $(a,b)$, then there exists $c\in(a,b)$ such that:

f(c) = \dfrac{f(a)+f(b)}{2}
f'(c) = \dfrac{f(b)-f(a)}{b-a}✔️
f'(c) = f(b)-f(a)
f(c) = f(b)-f(a)

Correct Answer Logic:

The Mean Value Theorem (Lagrange) guarantees existence of $c\in(a,b)$ such that $f'(c)=\dfrac{f(b)-f(a)}{b-a}$. This means the instantaneous rate of change equals the average rate of change over $[a,b]$.

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