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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3316

Question 401

Which antibiotic works by inhibiting bacterial 'Cell Wall' synthesis?

Tetracycline
Penicillin✔️
Erythromycin
Ciprofloxacin

Correct Answer Logic:

Beta-lactams like penicillin prevent the cross-linking of peptidoglycan.

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Tourism & Hospitality Management QUESTION #1611

Question 402

The Tourism and Hospitality Laws course specifically covers Pakistan's 'Hotel & Restaurant Act 1976 and Rules 1978.' Under this Act, which of the following obligations is placed on hotel operators?

To submit annual financial audits to the Ministry of Tourism
To register with the relevant authority, comply with prescribed standards of accommodation and service, and adhere to regulated pricing and consumer protection requirements✔️
To provide free accommodation to government officials
To employ only locally trained hospitality staff

Correct Answer Logic:

The Hotel & Restaurant Act 1976 (covered in Module 4 of the Tourism & Hospitality Laws course) regulates the registration, classification, standards of accommodation and service, and pricing compliance of hotels and restaurants in Pakistan — forming the primary legislative framework governing hospitality operations.

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Islamic Studies QUESTION #226

Question 403

If the husband is childless, how much does the widow get from the inheritance?

1/2
1/3
1/4✔️
None of these

Correct Answer Logic:

According to Sharia, a widow gets 1/4 if there are no children, and 1/8 if there are.

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Logical Reasoning QUESTION #3961

Question 404

Select the pair with a similar relationship: TEAMMATE : ADVERSARY

felon : criminal✔️
enemy : associate
pacifier : agitator
friend : companion

Correct Answer Logic:

1

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Math (Module-1) QUESTION #5467

Question 405

What is the equation of the line shown in the graph (a line with a negative slope crossing the $y$-axis at $-8$)?

$y = -2x - 8$
$y = x - 8$
$y = -x - 8$✔️
$y = 2x - 8$

Correct Answer Logic:

The line has a $y$-intercept of $-8$ and a slope of $-1$.

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Mathematics QUESTION #11226

Question 406

The period of $3\cos\dfrac{x}{5}$ is:

$2\pi$
$\dfrac{2\pi}{5}$
$6\pi$
$10\pi$✔️

Correct Answer Logic:

The period of $\cos(bx)$ is $\dfrac{2\pi}{|b|}$. Here $b = \dfrac{1}{5}$, so the period of $3\cos\dfrac{x}{5}$ is $\dfrac{2\pi}{1/5} = 10\pi$.

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Geography QUESTION #6315

Question 407

Which Green Revolution innovation had the most significant impact on wheat and rice yields in developing countries during 1960s-1980s?

Chemical fertilizers and pesticides
High-yielding variety (HYV) seeds with dwarfing genes✔️
Mechanization with tractors and harvesters
Irrigation infrastructure expansion

Correct Answer Logic:

HYV seeds with semi-dwarf genes (from Norman Borlaug's wheat, IR8 rice) were the cornerstone innovation. Dwarfing prevented lodging, allowing plants to support heavier grain heads and respond to fertilizer without falling over, dramatically increasing yields.

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Urdu QUESTION #1396

Question 408

ماں جی کس کی تخلیق ہے؟

مرزا ادیب✔️
قدرت اللہ شہاب
شوکت صدیقی
عصمت چغتائی

Correct Answer Logic:

''ماں جی'' مرزا ادیب کی مشہور تخلیق ہے۔ مرزا ادیب (1914–1999) اردو کے نامور افسانہ نگار، ڈرامہ نویس اور ناول نگار تھے۔ انہوں نے معاشرتی موضوعات پر خصوصاً ماں کے کردار کو بڑی خوبصورتی سے پیش کیا۔ ''ماں جی'' ان کی ادبی شناخت کا ایک اہم حوالہ ہے۔

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Math Physics Chemistry Biology QUESTION #4302

Question 409

Which of the following blood vessels have the lowest blood velocity, with correct reason?

Arteries: Due to thick walls
Capillaries: due to highest overall cross-sectional area✔️
Veins: due to blood flow against gravity
Capillaries: Due to two-way blood flow in capillaries

Correct Answer Logic:

Blood velocity is lowest in capillaries because the total cross-sectional area of all capillaries combined is the greatest, so by continuity, blood slows down significantly.

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Boilers Mechanical Engineering QUESTION #2490

Question 410

In the contour method of kinetostatic analysis, a closed kinematic chain is converted into two open chains by:

Removing the ground link
Severing one kinematic pair and introducing reaction force unknowns at that pair✔️
Applying inertia forces to all links simultaneously
Setting all angular accelerations to zero

Correct Answer Logic:

The contour method 'mentally disconnects' the kinematic pair $A_i$ between links $i-1$ and $i$, introducing unknown reaction forces $\mathbf{F}_{i-1,i}$ and $\mathbf{F}_{i,i-1}=-\mathbf{F}_{i-1,i}$. The closed chain becomes two open chains.

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MBBS QUESTION #10191

Question 411

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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Physics QUESTION #7047

Question 412

A pinhole camera box of length $L$ has a hole of radius $a$. The spot size is the sum of geometrical spread and diffraction spread. At what value of $a$ is the spot size $b_{min}$ minimized?

$a = \sqrt{\lambda L}$ and $b_{min} = \frac{2\lambda^2}{L}$
$a = \sqrt{\lambda L}$ and $b_{min} = \sqrt{4\lambda L}$✔️
$a = \sqrt{\frac{\lambda L}{2}}$ and $b_{min} = 2\sqrt{2\lambda L}$
$a = \frac{\lambda^2}{L}$ and $b_{min} = \frac{2\lambda^2}{L}$

Correct Answer Logic:

Spot size $b \approx \text{geometric spread} + \text{diffraction spread} = a + \frac{L\lambda}{a}$.

To minimize $b$, differentiate with respect to $a$ and set to zero:

$\frac{db}{da} = 1 - \frac{L\lambda}{a^2} = 0 \implies a = \sqrt{\lambda L}$.

Substituting back: $b_{min} = \sqrt{\lambda L} + \frac{L\lambda}{\sqrt{\lambda L}} = 2\sqrt{\lambda L} = \sqrt{4\lambda L}$.

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General Knowledge QUESTION #4728

Question 413

Angela Merkel holds which political position in her country?

President of France
First Lady of Britain
Chancellor of Germany✔️
President of Germany

Correct Answer Logic:

Angela Merkel served as Chancellor of Germany from 2005 to 2021, becoming the first female Chancellor of Germany. The Chancellor is the head of government in Germany.

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CISA QUESTION #6863

Question 414

In reviewing a software development life cycle, an auditor finds that security requirements are addressed only during final testing phase before production deployment. What is the MOST significant consequence?

Delayed security implementation
Security issues discovered late are expensive to fix and may require fundamental redesign✔️
Incomplete security coverage
Rushed implementation

Correct Answer Logic:

Security must be integrated throughout SDLC from requirements through design, development, and testing. Addressing security only at final testing means security flaws in architecture or design require expensive changes or workarounds. This 'bolted-on' security is less effective and more costly than security designed in from the start.

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Math Physics Chemistry Biology QUESTION #11233

Question 415

In a cell, the smooth endoplasmic reticulum (SER) is primarily involved in:

Protein synthesis
Lipid synthesis and detoxification✔️
ATP production
Photosynthesis

Correct Answer Logic:

The SER lacks ribosomes and is primarily involved in lipid synthesis, steroid hormone production, and detoxification of drugs and poisons. Protein synthesis occurs on the RER.

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Security Measures to Maintain Law and Order QUESTION #957

Question 416

Why is 'Equipment Maintenance' a security measure?

To spend the budget
To ensure security tools work during a crisis✔️
To keep staff busy
To follow manufacturer ads

Correct Answer Logic:

Scanners, radios, and vehicles must be in top condition to ensure the law and order mission doesn't fail due to hardware.

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Information Technology QUESTION #1135

Question 417

Which mechanism allows a device to inform the CPU that it is ready for data transfer?

Polling
Interrupt✔️
DMA
None of these

Correct Answer Logic:

An interrupt is a signal sent by hardware to the CPU to request immediate attention, allowing the CPU to perform other tasks until the device is ready.

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Education QUESTION #10872

Question 418

Which education system focused most heavily on the complete (holistic) training of the whole person?

Greek
Roman
Islamic✔️
English

Correct Answer Logic:

Islamic education is most comprehensively focused on the complete training of the whole human being — spiritual, moral, intellectual, physical, and social dimensions. Islamic educational philosophy aims to develop a balanced personality aligned with divine guidance, integrating religious knowledge with worldly knowledge. The concept of tarbiyah (character formation) alongside ta'lim (instruction) reflects this holistic approach to human development.

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