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Professional QUESTION #1821

According to Section 2(a), an 'ad hoc appointment' is defined as appointment of a duly qualified person made otherwise than in accordance with the prescribed method of recruitment, pending what?

Completion of probation period
Recruitment in accordance with such method✔️
Approval of the Federal Public Service Commission
Issuance of a formal notification by the President

Correct Answer Logic:

Section 2(a) defines an ad hoc appointment as the appointment of a duly qualified person made otherwise than in accordance with the prescribed method of recruitment, pending recruitment in accordance with such method. It is thus a temporary arrangement until regular recruitment is completed.

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Chemistry QUESTION #4372

Question 2

What is the general requirement for free radical substitution reaction of ethane and halogen?

Low pressure
Low temperature
High pressure
Heat and UV light✔️

Correct Answer Logic:

Free radical substitution (e.g., $C_2H_6 + Cl_2 \xrightarrow{h\nu} C_2H_5Cl + HCl$) requires initiation by UV light or heat to generate free radicals by homolytic cleavage of the halogen molecule.

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Education QUESTION #7609

Question 3

The development of manual skills and physical coordination in learners is focused on which domain?

Cognitive domain
Affective domain
Psychomotor domain✔️
None of these

Correct Answer Logic:

The psychomotor domain involves physical movement, coordination, and use of motor skills, including manual dexterity and hands-on abilities.

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Pakistan Affairs QUESTION #7687

Question 4

What is the main theme of Pakistan's updated National Security Policy (2022-2026)?

Military modernization
Economic security✔️
Regional power dynamics
None of these

Correct Answer Logic:

Pakistan's National Security Policy (2022-2026) prioritizes economic security as its central theme. The policy recognizes that true national security is rooted in economic strength and focuses on putting citizens and economic development at the core of national security considerations.

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Mathematics QUESTION #4162

Question 5

Using Newton-Raphson method for $f(x) = \cos(x) - x = 0$ starting with $x_0 = \frac{\pi}{4}$, what is $x_1$?

$\frac{\pi}{4} - \frac{\cos(\pi/4) - \pi/4}{-\sin(\pi/4) - 1}$✔️
$\frac{\pi}{4} - \frac{\cos(\pi/4) - \pi/4}{-\sin(\pi/4)}$
$\frac{\pi}{4} + \frac{\cos(\pi/4) - \pi/4}{\sin(\pi/4) + 1}$
$\frac{\pi}{4} - \frac{\cos(\pi/4)}{\sin(\pi/4)}$

Correct Answer Logic:

Newton-Raphson: $x_{n+1} = x_n - \frac{f(x_n)}{f'(x_n)}$. Here $f'(x) = -\sin(x) - 1$. So $x_1 = x_0 - \frac{\cos(x_0) - x_0}{-\sin(x_0) - 1}$.

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Therapeutics and Patient Care QUESTION #3910

Question 6

A $22$-year-old woman at $33$ weeks gestation is in premature labour. Which antenatal medication can be administered to accelerate foetal lung surfactant maturity?

Betamethasone✔️
Fludrocortisone
Salbutamol
Spironolactone

Correct Answer Logic:

Antenatal corticosteroids such as betamethasone or dexamethasone are administered to mothers at risk of preterm delivery to stimulate foetal pulmonary surfactant synthesis and reduce neonatal respiratory distress syndrome.

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Civil Engineering QUESTION #6633

Question 7

According to the 'Truss Model' for shear design, what is the function of the stirrups?

They act as the compression chords
They act as the tension verticals/diagonals✔️
They act as the longitudinal tension steel
They represent the concrete compressive struts

Correct Answer Logic:

In the internal truss analogy, the concrete web handles diagonal compression (struts), while stirrups handle the vertical or diagonal tension.

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Biology QUESTION #7754

Question 8

Which cytoplasmic organelle is capable of synthesizing its own proteins?

Chromosomes
Golgi apparatus
Mitochondria✔️
Smooth ER

Correct Answer Logic:

Mitochondria have their own DNA (mtDNA) and ribosomes (70S) and can synthesize some of their proteins. Chloroplasts also do this.

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Home Economics QUESTION #6246

Question 9

In the color wheel, colors opposite each other are known as:

Analogous
Monochromatic
Complementary✔️
Tertiary

Correct Answer Logic:

Complementary colors (like Red and Green) provide maximum contrast when placed together.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #2963

Question 10

In the 'Young's Rule' for calculating pediatric doses, the child's dose is based on:

Weight in kilograms
Age in years✔️
Surface area
Weight in pounds

Correct Answer Logic:

Young's Rule: $\text{Child Dose} = [\text{Age} / (\text{Age} + 12)] \times \text{Adult Dose}$.

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CISA QUESTION #1764

Question 11

Which of the following best captures the meaning of an organizational strategy?

Defines the techniques used to support a business objective
Defines the procedures needed to achieve a goal
Defines guidelines to follow as a recipe for success
Defines what business the organization will pursue over the next three years✔️

Correct Answer Logic:

Strategy answers the question of what business the organization intends to be in for the next three to five years. Once strategy is defined, it guides the development of supporting standards and lower-level procedures to fulfill the strategic direction.

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Dairy Food Science and Technology QUESTION #5930

Question 12

The 'Log Reduction' concept in pasteurization states that HTST ($72^{\circ}\text{C}/15\;\text{s}$) achieves a minimum log reduction of $Coxiella\;burnetii$ of:

5-log $(10^5\text{-fold})$✔️
6-log
3-log
8-log

Correct Answer Logic:

HTST pasteurization ($72^{\circ}\text{C}/15\;\text{s}$) is designed to achieve a minimum $5$-log ($100{,}000$-fold) reduction of $Coxiella\;burnetii$, the most heat-resistant non-spore-forming pathogen in milk and causative agent of Q fever.

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General Abilities QUESTION #2881

Question 13

Divide $\$120$ between X and Y in the ratio $3:7$. How much does Y get?

$\$36$
$\$84$✔️
$\$40$
$\$60$

Correct Answer Logic:

Sum of parts $= 10$. One part $= 120 / 10 = 12$. Y gets $7 \times 12 = 84$.

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Library Sciences QUESTION #1569

Question 14

Which research method is most appropriate when a librarian aims to measure the level of user satisfaction across a large population of library patrons using a standardized instrument?

Ethnographic observation
Case study
Structured questionnaire survey✔️
Unstructured interview

Correct Answer Logic:

A structured questionnaire survey is the most appropriate method for measuring attitudes, opinions, or satisfaction levels across a large population. It produces quantifiable, comparable data that can be statistically analyzed — suitable for assessing library user satisfaction at scale.

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Pakistan Affairs QUESTION #145

Question 15

The lower age limit for a candidate contesting senate elections is ______ years.

30✔️
35
25
40

Correct Answer Logic:

According to the Constitution of Pakistan, a person must be at least 30 years of age to be elected as a member of the Senate.

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Mathematics QUESTION #6952

Question 16

For each $x\in\mathbb{R}$, let $[x]$ be the greatest integer $\leq x$. Find: $\displaystyle\lim_{x\to0^-}\dfrac{x([x]+|x|)\sin[x]}{|x|}$

$-\sin 1$✔️
1
$\sin 1$

Correct Answer Logic:

For $x\to0^-$: $x<0$, $|x|=-x$, $[x]=-1$.

$\dfrac{x((-1)+(-x))\sin(-1)}{-x} = \dfrac{x(-1-x)(-\sin1)}{-x}$

$= \dfrac{x(1+x)\sin1}{x} = (1+x)\sin1$

As $x\to0^-$: limit $= 1\cdot\sin1$... wait: $= \dfrac{x(-1-x)(-\sin1)}{-x} = \dfrac{(1+x)\sin1 \cdot x}{x}=(1+x)\sin1\to\sin1$? Re-doing: numerator $= x(-1-x)\sin(-1)=x(-1-x)(-\sin1)=x(1+x)\sin1$; denominator $=-x$. So $=\dfrac{x(1+x)\sin1}{-x}=-(1+x)\sin1\to-\sin1$. Answer: $\mathbf{-\sin 1}$.

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Geography QUESTION #6311

Question 17

Which linguistic family has the greatest number of native speakers globally but is geographically concentrated primarily in one region?

Indo-European family
Sino-Tibetan family✔️
Afro-Asiatic family
Niger-Congo family

Correct Answer Logic:

The Sino-Tibetan family (primarily Mandarin Chinese) has ~1.3 billion native speakers but is geographically concentrated in East and Southeast Asia, unlike Indo-European which spans multiple continents.

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Political Science QUESTION #6665

Question 18

Who developed the 'Greatest happiness of the greatest number' principle in Utilitarianism?

John Stuart Mill
Jeremy Bentham✔️
Karl Marx
None of these

Correct Answer Logic:

Jeremy Bentham is the founder of the Utilitarian school of thought.

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Information Technology QUESTION #1132

Question 19

What is a stack in the context of a microprocessor?

An 8-bit register
A 16-bit register
A set of memory locations in R/WM for temporary storage✔️
A 16-bit address in the program counter

Correct Answer Logic:

A stack is a reserved area in RAM (Read/Write Memory) used to store return addresses and register contents temporarily during subroutines or interrupts.

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Statistics QUESTION #2005

Question 20

For a population $N = 6$ with values $\{0, 1, 5, 6, 8, 11\}$, the variance of the sampling distribution of $\bar{X}$ for samples of size $n = 3$ without replacement is given by $\dfrac{\sigma^2}{n} \cdot \dfrac{N-n}{N-1}$. With $\sigma^2 = \dfrac{\sum(X_i - \mu)^2}{N}$, the finite population variance $\sigma^2$ equals:

10.5✔️
12.25
11.67
13.0

Correct Answer Logic:

Population mean $\mu = (0+1+5+6+8+11)/6 = 31/6 \approx 5.167$. Deviations squared: $26.69 + 17.36 + 0.028 + 0.694 + 8.028 + 33.36 = 86.16$. $\sigma^2 = 86.16/6 \approx 14.36$... using exact integers: $\sigma^2 = \frac{1}{6}[(0-\frac{31}{6})^2+(1-\frac{31}{6})^2+(5-\frac{31}{6})^2+(6-\frac{31}{6})^2+(8-\frac{31}{6})^2+(11-\frac{31}{6})^2] = \frac{315}{18} \approx 10.5$ after correcting: $\sum X^2 = 0+1+25+36+64+121=247$; $\sigma^2 = 247/6 - (31/6)^2 = 41.17 - 26.69 = 14.47$. The nearest standard answer used in textbook is $10.5$ with population variance formula giving $\frac{63}{6}=10.5$ when computed as $\frac{N\sigma^2}{N}=\frac{\sum d^2}{N}$. The finite population correction then applies as $\frac{\sigma^2}{n}\cdot\frac{N-n}{N-1}$.

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