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Graphite shows anisotropic behavior — its physical and mechanical properties differ depending on the direction. This is due to its layered hexagonal structure with strong covalent bonds within layers but weak van der Waals forces between layers.

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Pakistan Affairs QUESTION #4661

Question 4

The project to address waterlogging and salinity in Pakistan received financial support from which organization?

World Bank
IMF
Asian Development Bank✔️
USAID

Correct Answer Logic:

The Asian Development Bank (ADB) has funded numerous projects in Pakistan to address waterlogging and salinity, which are major agricultural challenges.

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Chemistry QUESTION #1076

Question 5

Match List-I with List-II: (A) Haber process — (B) Wacker oxidation — (C) Wilkinson catalyst — (D) Ziegler catalyst; with (I) Fe catalyst (II) PdCl$_2$ (III) [(PPh$_3)_3$RhCl] (IV) TiCl$_4$ with Al(CH$_3)_3$

A-I, B-II, C-III, D-IV✔️
A-I, B-IV, C-III, D-II
A-I, B-II, C-IV, D-III
A-II, B-III, C-I, D-IV

Correct Answer Logic:

Haber process (NH$_3$ synthesis): Fe catalyst (I). Wacker oxidation (ethylene to acetaldehyde): PdCl$_2$ (II). Wilkinson catalyst (hydrogenation): [(PPh$_3)_3$RhCl] (III). Ziegler-Natta catalyst (polymerization): TiCl$_4$ + Al(CH$_3)_3$ (IV). Matching: A-I, B-II, C-III, D-IV.

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Information Technology QUESTION #1147

Question 6

Which join returns all records when there is a match in either left or right table?

Inner Join
Left Join
Full Outer Join✔️
Right Join

Correct Answer Logic:

A Full Outer Join combines the results of both Left and Right outer joins and returns all rows from both tables, filling with NULLs where matches are missing.

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Quantitative Reasoning QUESTION #8048

Question 7

DEFERENCE: Choose the word most nearly opposite in meaning to this word.

aversion
resignation
suspicion
contempt✔️

Correct Answer Logic:

DEFERENCE means respectful submission or yielding to another's judgment or authority — showing high regard. Its antonym is contempt, which means a feeling that someone is worthless or beneath consideration — the complete opposite of respectful regard. 'Aversion' means strong dislike. 'Resignation' means acceptance. 'Suspicion' means distrust. 'Contempt' is the strongest direct antonym.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3525

Question 8

In the 'Homeopathic' system, drugs are selected based on the principle of:

Law of Opposites
'Similia Similibus Curentur' (Like cures like)✔️
Surgical intervention
Vaccination

Correct Answer Logic:

Homeopathy uses highly diluted substances that cause symptoms similar to the disease.

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Education QUESTION #7597

Question 9

In which teaching method does the teacher use strategic questions to guide students toward deeper understanding and critical thinking?

Discussion
Socratic method✔️
Brainstorming
None of these

Correct Answer Logic:

The Socratic method uses probing questions to stimulate critical thinking, challenge assumptions, and help students discover knowledge through guided inquiry.

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Security Measures to Maintain Law and Order QUESTION #858

Question 10

In maintaining order, "Discriminatory Profiling" is unethical. This refers to targeting individuals based solely on:

Suspicious behavior
Race, religion, or ethnicity✔️
Lack of ID
Travel history

Correct Answer Logic:

Professional security profiling must be based on behavior (non-verbal cues) rather than protected identity characteristics.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3011

Question 11

The purpose of a 'Suspending Agent' is to:

Increase the rate of settling
Increase the viscosity of the vehicle✔️
Lower the boiling point
Sterilize the preparation

Correct Answer Logic:

Suspending agents increase viscosity to slow down the sedimentation of solid particles.

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Civil Engineering QUESTION #2126

Question 12

The hydraulic grade line (HGL) and energy grade line (EGL) in pipe flow are related such that:

HGL is always above EGL by the velocity head
EGL is always above or equal to HGL by the velocity head $\dfrac{V^2}{2g}$ — the vertical distance between EGL and HGL equals the velocity head at any cross-section✔️
HGL and EGL coincide for all flows
EGL slopes upward in the direction of flow while HGL slopes downward

Correct Answer Logic:

EGL represents total energy head $= \dfrac{p}{\rho g} + z + \dfrac{V^2}{2g}$. HGL represents piezometric head $= \dfrac{p}{\rho g} + z$. The difference is the velocity head: $EGL - HGL = \dfrac{V^2}{2g}$. Both slope downward in flow direction (energy loss). EGL is always above HGL (except at stagnation). When HGL falls below pipe centerline, pressure becomes sub-atmospheric — risk of cavitation and column separation.

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General Knowledge QUESTION #2613

Question 13

What is the PRIMARY function of a CPU (Central Processing Unit)?

To store large amounts of data permanently like photos and documents
To convert electricity from the wall outlet into usable computer power
To process instructions and perform calculations that run programs and applications✔️
To connect peripheral devices like keyboards and mice to the computer

Correct Answer Logic:

The CPU (Central Processing Unit) is the brain of the computer. It processes instructions and performs calculations. Every action you take on a computer — opening a file, typing text — involves the CPU executing instructions.

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Urdu QUESTION #5161

Question 14

قہوۂ عبارت سے کیا مراد ہے؟

عبارت کی تلخیص✔️
عبارت کا مفہوم
عبارت کا ترجمہ
ان میں سے کوئی نہیں

Correct Answer Logic:

قہوۂ عبارت سے مراد کسی عبارت کا خلاصہ یا تلخیص ہے۔

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Boilers Mechanical Engineering QUESTION #2538

Question 15

The polar moment of area $J_O$ about point O is related to second moments $I_x$ and $I_y$ by:

$J_O = I_x - I_y$
$J_O = I_x + I_y$✔️
$J_O = \sqrt{I_x^2 + I_y^2}$
$J_O = I_x \cdot I_y$

Correct Answer Logic:

By the perpendicular axis theorem: $J_O=\int r^2\,dA=\int(x^2+y^2)\,dA=I_x+I_y$. This applies to planar areas.

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English QUESTION #2726

Question 16

Which sentence is in the SIMPLE PRESENT TENSE?

She was reading a book.
He will play football.
They eat lunch at noon.✔️
I had completed my work.

Correct Answer Logic:

The simple present tense is used for habits

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3380

Question 17

'Saponification' is the chemical process of making soap by reacting fats with:

Acids
Strong bases (like $NaOH$)✔️
Enzymes
Oxygen

Correct Answer Logic:

Hydrolysis of triglycerides with an alkali produces glycerol and salts of fatty acids (soap).

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Agronomy QUESTION #2017

Question 18

Primary tillage differs from secondary tillage in that primary tillage:

Is performed closer to sowing time with lighter implements
Breaks the soil to greater depths and is performed soon after harvest of the previous crop✔️
Is exclusively used for inter-row cultivation during crop growth
Involves only the surface 2–3 cm of soil

Correct Answer Logic:

Primary tillage refers to deep initial tillage (e.g., moldboard or disc plowing) performed after harvest to break up compacted soil. Secondary tillage involves shallower, finer operations (harrowing, leveling) performed closer to sowing to refine the seedbed.

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Biology QUESTION #4239

Question 19

How do the kidneys contribute to maintain normal blood calcium level?

By storing excess calcium
By reabsorbing calcium and activating vitamin D✔️
By secreting calcium directly into the blood
By converting calcium into urea for excretion

Correct Answer Logic:

Kidneys reabsorb $\text{Ca}^{2+}$ and activate vitamin D.

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MCQs Section QUESTION #4870

Question 20

Correct antonym of "PROLIFIC" is

Skilful✔️
Fruitful
Wordy
Spread out

Correct Answer Logic:

Prolific means producing much fruit, many works, or offspring in abundance. Its antonym relates to being unproductive or barren. Among the options, 'skilful' is the intended answer as it does not carry the sense of abundant production.

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